diff --git a/src/ShapeUpgrade/ShapeUpgrade_UnifySameDomain.cxx b/src/ShapeUpgrade/ShapeUpgrade_UnifySameDomain.cxx
index 6d443626a3..f27230f0bb 100644
--- a/src/ShapeUpgrade/ShapeUpgrade_UnifySameDomain.cxx
+++ b/src/ShapeUpgrade/ShapeUpgrade_UnifySameDomain.cxx
@@ -88,43 +88,6 @@ struct SubSequenceOfEdges
   TopoDS_Edge UnionEdges;
 };
 
-static Standard_Boolean IsLikeSeam(const TopoDS_Edge& anEdge,
-                                   const TopoDS_Face& aFace,
-                                   const Handle(Geom_Surface)& aBaseSurface)
-{
-  if (!aBaseSurface->IsUPeriodic() && !aBaseSurface->IsVPeriodic())
-    return Standard_False;
-
-  BRepAdaptor_Curve2d BAcurve2d(anEdge, aFace);
-  gp_Pnt2d FirstPoint, LastPoint;
-  gp_Vec2d FirstDir, LastDir;
-  BAcurve2d.D1(BAcurve2d.FirstParameter(), FirstPoint, FirstDir);
-  BAcurve2d.D1(BAcurve2d.LastParameter(),  LastPoint,  LastDir);
-  Standard_Real Length = FirstDir.Magnitude();
-  if (Length <= gp::Resolution())
-    return Standard_False;
-  else
-    FirstDir /= Length;
-  Length = LastDir.Magnitude();
-  if (Length <= gp::Resolution())
-    return Standard_False;
-  else
-    LastDir /= Length;
-  
-  Standard_Real Tol = 1.e-7;
-  if (aBaseSurface->IsUPeriodic() &&
-    (Abs(FirstDir.X()) < Tol) &&
-    (Abs(LastDir.X()) < Tol))
-    return Standard_True;
-
-  if (aBaseSurface->IsVPeriodic() &&
-    (Abs(FirstDir.Y()) < Tol) &&
-    (Abs(LastDir.Y()) < Tol))
-    return Standard_True;
-
-  return Standard_False;
-}
-
 //=======================================================================
 //function : AddOrdinaryEdges
 //purpose  : auxilary
@@ -1395,10 +1358,6 @@ void ShapeUpgrade_UnifySameDomain::IntUnifyFaces(const TopoDS_Shape& theInpShape
         //
         if (IsSameDomain(aFace,anCheckedFace, myLinTol, myAngTol)) {
 
-          // hotfix for 27271: prevent merging along periodic direction.
-          if (IsLikeSeam(edge, anCheckedFace, aBaseSurface))
-            continue;
-
           if (AddOrdinaryEdges(edges,anCheckedFace,dummy)) {
             // sequence edges is modified
             i = dummy;
diff --git a/tests/boolean/removefeatures/A1 b/tests/boolean/removefeatures/A1
index a7c841c35e..9f7b41c1b6 100644
--- a/tests/boolean/removefeatures/A1
+++ b/tests/boolean/removefeatures/A1
@@ -14,7 +14,7 @@ compound feature1 feature2 feature3 feature4 gap
 removefeatures res1 s feature1
 checkshape res1
 checkprops res1 -s 2387.42 -v 1060.96 -deps 1.e-7
-checknbshapes res1 -vertex 68 -edge 102 -wire 36 -face 36 -shell 1 -solid 1 -t
+checknbshapes res1 -vertex 66 -edge 99 -wire 35 -face 35 -shell 1 -solid 1 -t
 CheckIsFeatureRemoved feature1 {v e f}
 
 removefeatures res3 s feature1 feature2
@@ -27,19 +27,19 @@ CheckIsFeatureRemoved feature2 {e f}
 removefeatures res4 s feature3
 checkshape res4
 checkprops res4 -s 2387.67 -v 1060.68 -deps 1.e-7
-checknbshapes res4 -vertex 70 -edge 105 -wire 37 -face 37 -shell 1 -solid 1 -t
+checknbshapes res4 -vertex 67 -edge 100 -wire 35 -face 35 -shell 1 -solid 1 -t
 CheckIsFeatureRemoved feature3 {v e f}
 
 removefeatures res5 s feature4
 checkshape res5
-checkprops res5 -s 2387.67 -v 1060.68 -deps 1.e-7
-checknbshapes res5 -vertex 70 -edge 105 -wire 37 -face 37 -shell 1 -solid 1 -t
+checkprops res5 -s 2387.67 -v 1060.67 -deps 1.e-7
+checknbshapes res5 -vertex 67 -edge 100 -wire 35 -face 35 -shell 1 -solid 1 -t
 CheckIsFeatureRemoved feature4 {v e f}
 
 removefeatures res6 s feature3 feature4
 checkshape res6
 checkprops res6 -s 2387.89 -v 1060.71 -deps 1.e-7
-checknbshapes res6 -vertex 68 -edge 102 -wire 36 -face 36 -shell 1 -solid 1 -t
+checknbshapes res6 -vertex 65 -edge 97 -wire 34 -face 34 -shell 1 -solid 1 -t
 CheckIsFeatureRemoved feature3 {v e f}
 CheckIsFeatureRemoved feature4 {v e f}
 
diff --git a/tests/boolean/removefeatures/A2 b/tests/boolean/removefeatures/A2
index 8e8bfdee7c..fff74355e3 100644
--- a/tests/boolean/removefeatures/A2
+++ b/tests/boolean/removefeatures/A2
@@ -12,17 +12,17 @@ compound feature1 feature2 gap
 removefeatures res1 s feature1
 checkshape res1
 checkprops res1 -s 2387.38 -v 1060.67 -deps 1.e-7
-checknbshapes res1 -vertex 62 -edge 93 -wire 33 -face 33 -shell 1 -solid 1
+checknbshapes res1 -vertex 60 -edge 89 -wire 31 -face 31 -shell 1 -solid 1
 CheckIsFeatureRemoved feature1 {v e f}
 
 removefeatures res2 s feature2
 checkshape res2
 checkprops res2 -s 2387.17 -v 1060.75 -deps 1.e-7
-checknbshapes res2 -vertex 62 -edge 93 -wire 35 -face 34 -shell 1 -solid 1
+checknbshapes res2 -vertex 60 -edge 89 -wire 33 -face 32 -shell 1 -solid 1
 CheckIsFeatureRemoved feature2 {v e f}
 
 removefeatures res3 s gap
 checkshape res3
 checkprops res3 -s 2386.99 -v 1060.79 -deps 1.e-7
-checknbshapes res3 -vertex 54 -edge 81 -wire 29 -face 29 -shell 1 -solid 1
+checknbshapes res3 -vertex 52 -edge 77 -wire 27 -face 27 -shell 1 -solid 1
 CheckIsFeatureRemoved gap {v e f}
diff --git a/tests/boolean/removefeatures/A3 b/tests/boolean/removefeatures/A3
index f1dc6c173e..c127914bb4 100644
--- a/tests/boolean/removefeatures/A3
+++ b/tests/boolean/removefeatures/A3
@@ -10,5 +10,5 @@ compound s_37 s_26 s_27 s_28 gap
 removefeatures res s gap
 checkshape res
 checkprops res -s 2387.07 -v 1060.76 -deps 1.e-7
-checknbshapes res -vertex 64 -edge 96 -wire 34 -face 34 -shell 1 -solid 1
+checknbshapes res -vertex 62 -edge 92 -wire 32 -face 32 -shell 1 -solid 1
 CheckIsFeatureRemoved gap {v e f}
diff --git a/tests/boolean/removefeatures/A4 b/tests/boolean/removefeatures/A4
index f56406a12d..5837239354 100644
--- a/tests/boolean/removefeatures/A4
+++ b/tests/boolean/removefeatures/A4
@@ -13,18 +13,18 @@ compound feature1 feature2 feature3 gap
 removefeatures res1 s feature1 feature2
 checkshape res1
 checkprops res1 -s 2387.88 -v 1060.71 -deps 1.e-7
-checknbshapes res1 -vertex 68 -edge 102 -wire 36 -face 36 -shell 1 -solid 1
+checknbshapes res1 -vertex 65 -edge 97 -wire 34 -face 34 -shell 1 -solid 1
 CheckIsFeatureRemoved feature1 {v e f}
 CheckIsFeatureRemoved feature2 {v e f}
 
 removefeatures res2 s feature3
 checkshape res2
 checkprops res2 -s 2391.13 -v 1064.08 -deps 1.e-7
-checknbshapes res2 -vertex 66 -edge 99 -wire 35 -face 35 -shell 1 -solid 1
+checknbshapes res2 -vertex 63 -edge 94 -wire 33 -face 33 -shell 1 -solid 1
 CheckIsFeatureRemoved feature3 {v e f}
 
 removefeatures res3 s gap
 checkshape res3
 checkprops res3 -s 2392.93 -v 1065.38 -deps 1.e-7
-checknbshapes res3 -vertex 60 -edge 90 -wire 32 -face 32 -shell 1 -solid 1
+checknbshapes res3 -vertex 57 -edge 85 -wire 30 -face 30 -shell 1 -solid 1
 CheckIsFeatureRemoved gap {v e f}
diff --git a/tests/boolean/removefeatures/A5 b/tests/boolean/removefeatures/A5
index f4da7d95c8..8582c54cdc 100644
--- a/tests/boolean/removefeatures/A5
+++ b/tests/boolean/removefeatures/A5
@@ -10,5 +10,5 @@ compound s_11 s_13 s_12 spike
 removefeatures res s spike
 checkshape res
 checkprops res -s 2323.49 -v 1037.57 -deps 1.e-7
-checknbshapes res -vertex 64 -edge 96 -wire 34 -face 34 -shell 1 -solid 1
+checknbshapes res -vertex 61 -edge 91 -wire 32 -face 32 -shell 1 -solid 1
 CheckIsFeatureRemoved spike {v e f}
diff --git a/tests/boolean/removefeatures/A6 b/tests/boolean/removefeatures/A6
index d828b6873b..9f753bc2bc 100644
--- a/tests/boolean/removefeatures/A6
+++ b/tests/boolean/removefeatures/A6
@@ -10,7 +10,7 @@ compound s_11 s_13 s_12 spike
 removefeatures res s spike
 checkshape res
 checkprops res -s 2323.49 -v 1037.57 -deps 1.e-7
-checknbshapes res -vertex 64 -edge 96 -wire 34 -face 34 -shell 1 -solid 1
+checknbshapes res -vertex 61 -edge 91 -wire 32 -face 32 -shell 1 -solid 1
 CheckIsFeatureRemoved spike {v e f}
 
 # get history of the operation
@@ -19,7 +19,7 @@ savehistory rf_hist
 # check modification of the top face
 modified m5 rf_hist s_5
 checkprops m5 -s 1089.87
-checknbshapes m5 -vertex 31 -edge 31 -wire 1 -face 1
+checknbshapes m5 -vertex 29 -edge 29 -wire 1 -face 1
 
 # check modification of the side faces where the spike was located
 modified m10 rf_hist s_10
diff --git a/tests/boolean/removefeatures/A8 b/tests/boolean/removefeatures/A8
index cbd2440f92..e6543064e3 100644
--- a/tests/boolean/removefeatures/A8
+++ b/tests/boolean/removefeatures/A8
@@ -1,5 +1,3 @@
-puts "TODO OCC29504 ALL: Faulty shapes in variables faulty_1 to"
-
 pload XDE
 
 stepread [locate_data_file bug29481_L3.step] s *
@@ -12,6 +10,6 @@ compound s_2 s_25 s_1 s_4 feature
 
 removefeatures result s feature
 checkshape result
-checkprops result -s 2386.95 -v 1064.36 -deps 1.e-7
-checknbshapes result -vertex 62 -edge 93 -wire 35 -face 34 -shell 1 -solid 1
+checkprops result -s 2392.41 -v 1063.75 -deps 1.e-7
+checknbshapes result -vertex 61 -edge 91 -wire 34 -face 33 -shell 1 -solid 1
 CheckIsFeatureRemoved feature {e f}
diff --git a/tests/boolean/removefeatures/B1 b/tests/boolean/removefeatures/B1
index cec8a069c2..7dbfab7523 100644
--- a/tests/boolean/removefeatures/B1
+++ b/tests/boolean/removefeatures/B1
@@ -5,7 +5,7 @@ explode s f
 removefeatures result s s_13
 checkshape result
 checkprops result -s 463.068 -v 194.214 -deps 1.e-7
-checknbshapes result -vertex 32 -edge 53 -wire 24 -face 21 -shell 1 -solid 1
+checknbshapes result -vertex 31 -edge 50 -wire 23 -face 20 -shell 1 -solid 1
 CheckIsFeatureRemoved s_13 {v e f}
 
 # get history of the operation
diff --git a/tests/boolean/removefeatures/B2 b/tests/boolean/removefeatures/B2
index 9ce20f5da9..a4606b1892 100644
--- a/tests/boolean/removefeatures/B2
+++ b/tests/boolean/removefeatures/B2
@@ -5,7 +5,7 @@ explode s f
 removefeatures result s s_14
 checkshape result
 checkprops result -s 462.33 -v 194.594 -deps 1.e-7
-checknbshapes result -vertex 34 -edge 54 -wire 24 -face 21 -shell 1 -solid 1 -t
+checknbshapes result -vertex 33 -edge 51 -wire 23 -face 20 -shell 1 -solid 1 -t
 CheckIsFeatureRemoved s_14 {e f}
 
 # get history of the operation
@@ -14,7 +14,7 @@ savehistory rf_hist
 # check modification of the top face
 modified m1 rf_hist s_1
 checkprops m1 -s 171.478
-checknbshapes m1 -vertex 14 -edge 14 -wire 3 -face 1
+checknbshapes m1 -vertex 13 -edge 13 -wire 3 -face 1
 
 generated g1 rf_hist s_1
 checknbshapes g1 -vertex 1 -edge 1
diff --git a/tests/boolean/removefeatures/B3 b/tests/boolean/removefeatures/B3
index 77e6659a6e..6171f123d1 100644
--- a/tests/boolean/removefeatures/B3
+++ b/tests/boolean/removefeatures/B3
@@ -5,7 +5,7 @@ explode s f
 removefeatures result s s_15
 checkshape result
 checkprops result -s 462.273 -v 193.127 -deps 1.e-7
-checknbshapes result -vertex 34 -edge 54 -wire 24 -face 21 -shell 1 -solid 1 -t
+checknbshapes result -vertex 33 -edge 51 -wire 23 -face 20 -shell 1 -solid 1 -t
 CheckIsFeatureRemoved s_15 {e f}
 
 # get history of the operation
@@ -14,7 +14,7 @@ savehistory rf_hist
 # check modification of the top face
 modified m1 rf_hist s_1
 checkprops m1 -s 172.452
-checknbshapes m1 -vertex 14 -edge 14 -wire 3 -face 1
+checknbshapes m1 -vertex 13 -edge 13 -wire 3 -face 1
 
 generated g1 rf_hist s_1
 checknbshapes g1 -vertex 1 -edge 1
diff --git a/tests/boolean/removefeatures/B4 b/tests/boolean/removefeatures/B4
index 3e81d7784d..c3db8a353f 100644
--- a/tests/boolean/removefeatures/B4
+++ b/tests/boolean/removefeatures/B4
@@ -4,7 +4,7 @@ explode s f
 removefeatures result s s_4
 checkshape result
 checkprops result -s 462.815 -v 195.248 -deps 1.e-7
-checknbshapes result -vertex 31 -edge 50 -wire 23 -face 20 -shell 1 -solid 1
+checknbshapes result -vertex 30 -edge 47 -wire 22 -face 19 -shell 1 -solid 1
 CheckIsFeatureRemoved s_4 {v e f}
 
 # get history of the operation
@@ -13,7 +13,7 @@ savehistory rf_hist
 # check modification of the top face
 modified m1 rf_hist s_1
 checkprops m1 -s 169.122
-checknbshapes m1 -vertex 12 -edge 12 -wire 3 -face 1
+checknbshapes m1 -vertex 11 -edge 11 -wire 3 -face 1
 
 # check modification of the side faces
 modified m3 rf_hist s_3
diff --git a/tests/boolean/removefeatures/B5 b/tests/boolean/removefeatures/B5
index 8ebc714c52..b4be58c36c 100644
--- a/tests/boolean/removefeatures/B5
+++ b/tests/boolean/removefeatures/B5
@@ -5,7 +5,7 @@ explode s f
 removefeatures result s s_6 s_18
 checkshape result
 checkprops result -s 461.315 -v 196.178 -deps 1.e-7
-checknbshapes result -vertex 30 -edge 50 -wire 23 -face 20 -shell 1 -solid 1
+checknbshapes result -vertex 29 -edge 47 -wire 22 -face 19 -shell 1 -solid 1
 CheckIsFeatureRemoved s_6 {v e f}
 CheckIsFeatureRemoved s_18 {v e f}
 
@@ -15,7 +15,7 @@ savehistory rf_hist
 # check modification of the top face
 modified m1 rf_hist s_1
 checkprops m1 -s 172.551
-checknbshapes m1 -vertex 14 -edge 14 -wire 3 -face 1
+checknbshapes m1 -vertex 13 -edge 13 -wire 3 -face 1
 
 # check modification of the side face
 modified m19 rf_hist s_19
diff --git a/tests/boolean/removefeatures/B8 b/tests/boolean/removefeatures/B8
index c4c90d8422..1430c477b2 100644
--- a/tests/boolean/removefeatures/B8
+++ b/tests/boolean/removefeatures/B8
@@ -6,7 +6,7 @@ explode s f
 removefeatures result s s_14 s_20
 checkshape result
 checkprops result -s 462.33 -v 197.735 -deps 1.e-7
-checknbshapes result -vertex 32 -edge 51 -wire 21 -face 20 -shell 1 -solid 1
+checknbshapes result -vertex 31 -edge 48 -wire 20 -face 19 -shell 1 -solid 1
 CheckIsFeatureRemoved s_14 {v e f}
 CheckIsFeatureRemoved s_20 {v e f}
 
@@ -16,7 +16,7 @@ savehistory rf_hist
 # check modification of the top and bottom faces
 modified m1 rf_hist s_1
 checkprops m1 -s 174.62
-checknbshapes m1 -vertex 13 -edge 13 -wire 2 -face 1
+checknbshapes m1 -vertex 12 -edge 12 -wire 2 -face 1
 
 modified m16 rf_hist s_16
 checkprops m16 -s 194.429
diff --git a/tests/boolean/removefeatures/B9 b/tests/boolean/removefeatures/B9
index 1f64c8b1b1..080c8a7011 100644
--- a/tests/boolean/removefeatures/B9
+++ b/tests/boolean/removefeatures/B9
@@ -6,7 +6,7 @@ explode s f
 removefeatures result s s_15 s_21 s_22
 checkshape result
 checkprops result -s 449.707 -v 186.844 -deps 1.e-7
-checknbshapes result -vertex 31 -edge 51 -wire 21 -face 19 -shell 1 -solid 1
+checknbshapes result -vertex 30 -edge 48 -wire 20 -face 18 -shell 1 -solid 1
 CheckIsFeatureRemoved s_15 {v e f}
 CheckIsFeatureRemoved s_21 {v e f}
 CheckIsFeatureRemoved s_22 {v e f}
@@ -17,7 +17,7 @@ savehistory rf_hist
 # check modification of the top face
 modified m1 rf_hist s_1
 checkprops m1 -s 175.593
-checknbshapes m1 -vertex 13 -edge 13 -wire 2 -face 1
+checknbshapes m1 -vertex 12 -edge 12 -wire 2 -face 1
 
 # check that no new intersections have been created
 if {![regexp "No shapes were generated" [generated g1 rf_hist s_1]]} {
diff --git a/tests/boolean/removefeatures/F1 b/tests/boolean/removefeatures/F1
index 7d16302a26..d8cbf89323 100644
--- a/tests/boolean/removefeatures/F1
+++ b/tests/boolean/removefeatures/F1
@@ -10,7 +10,7 @@ compound s_115 s_112 s_116 s_114 s_111 s_113 blend
 removefeatures result s fillet blend
 checkshape result
 checkprops result -s 809750 -v 1.46451e+007 -deps 1.e-7
-checknbshapes result -vertex 258 -edge 394 -wire 164 -face 139 -shell 1 -solid 1 -t
+checknbshapes result -vertex 250 -edge 378 -wire 156 -face 131 -shell 1 -solid 1 -t
 CheckIsFeatureRemoved fillet {e f}
 CheckIsFeatureRemoved blend {e f}
 
diff --git a/tests/boolean/removefeatures/F2 b/tests/boolean/removefeatures/F2
index eb173c7008..800e425dc8 100644
--- a/tests/boolean/removefeatures/F2
+++ b/tests/boolean/removefeatures/F2
@@ -9,7 +9,7 @@ compound s_34 s_12 s_32 s_40 s_37 s_16 s_18 s_17 s_39 s_41 s_31 s_14 s_35 s_13 s
 removefeatures result s gaps
 checkshape result
 checkprops result -s 813251 -v 1.49885e+007 -deps 1.e-7
-checknbshapes result -vertex 230 -edge 358 -wire 156 -face 131 -shell 1 -solid 1 -t
+checknbshapes result -vertex 216 -edge 334 -wire 146 -face 121 -shell 1 -solid 1 -t
 CheckIsFeatureRemoved gaps {v e f}
 
 checkview -display result -2d -path ${imagedir}/${test_image}.png
diff --git a/tests/boolean/removefeatures/F3 b/tests/boolean/removefeatures/F3
index bfd87039ef..a108b6cd58 100644
--- a/tests/boolean/removefeatures/F3
+++ b/tests/boolean/removefeatures/F3
@@ -9,7 +9,7 @@ compound s_86 s_83 s_81 s_82 s_84 s_85 s_80 s_78 s_79 s_88 s_77 s_87 holes
 removefeatures result s holes
 checkshape result
 checkprops result -s 798285 -v 1.51114e+007 -deps 1.e-7
-checknbshapes result -vertex 246 -edge 382 -wire 160 -face 139 -shell 1 -solid 1 -t
+checknbshapes result -vertex 234 -edge 362 -wire 152 -face 131 -shell 1 -solid 1 -t
 CheckIsFeatureRemoved holes {v e f}
 
 checkview -display result -2d -path ${imagedir}/${test_image}.png
diff --git a/tests/boolean/removefeatures/F4 b/tests/boolean/removefeatures/F4
index e7bc71dd71..a8d6dd16d3 100644
--- a/tests/boolean/removefeatures/F4
+++ b/tests/boolean/removefeatures/F4
@@ -9,7 +9,7 @@ compound s_10 s_66 s_43 s_65 s_63 s_64 s_69 s_29 s_68 s_70 s_20 s_67 fillets
 removefeatures result s fillets
 checkshape result
 checkprops result -s 811691 -v 1.46014e+007 -deps 1.e-7
-checknbshapes result -vertex 246 -edge 382 -wire 164 -face 139 -shell 1 -solid 1 -t
+checknbshapes result -vertex 234 -edge 362 -wire 156 -face 131 -shell 1 -solid 1 -t
 CheckIsFeatureRemoved fillets {v e f}
 
 checkview -display result -2d -path ${imagedir}/${test_image}.png
diff --git a/tests/boolean/removefeatures/G3 b/tests/boolean/removefeatures/G3
index 0813cc9ef1..131de978f1 100644
--- a/tests/boolean/removefeatures/G3
+++ b/tests/boolean/removefeatures/G3
@@ -15,7 +15,7 @@ CheckIsFeatureRemoved a_6 {f}
 
 foreach r {r1 r2} {
   checkshape $r
-  checknbshapes $r -wire 19 -face 17 -shell 1 -solid 1
+  checknbshapes $r -wire 17 -face 15 -shell 1 -solid 1
   checkprops $r -s 421523 -v 2.04083e+006 -deps 1.e-7
 }
 
@@ -24,7 +24,7 @@ removefeatures result a a_1 a_8
 CheckIsFeatureRemoved a_1 {f}
 CheckIsFeatureRemoved a_8 {f}
 checkshape result
-checknbshapes result -wire 22 -face 20 -shell 1 -solid 1
+checknbshapes result -wire 15 -face 13 -shell 1 -solid 1
 checkprops result -s 421862 -v 2.04152e+006 -deps 1.e-7
 
 checkview -display result -2d -path ${imagedir}/${test_image}.png
diff --git a/tests/boolean/removefeatures/G4 b/tests/boolean/removefeatures/G4
index a689bd30c9..76a6bdb83c 100644
--- a/tests/boolean/removefeatures/G4
+++ b/tests/boolean/removefeatures/G4
@@ -1,4 +1,3 @@
-puts "TODO OCC30099 ALL: Faulty shapes in variables faulty_1 to faulty_"
 puts "TODO OCC30099 ALL: Error : The area of result shape is"
 puts "TODO OCC30099 ALL: Error : The volume of result shape is"
 
@@ -15,7 +14,7 @@ explode a f
 removefeatures r1 a a_8
 CheckIsFeatureRemoved a_8 {f}
 checkshape r1
-checknbshapes r1 -wire 19 -face 17 -shell 1 -solid 1
+checknbshapes r1 -wire 17 -face 15 -shell 1 -solid 1
 checkprops r1 -s 421523 -v 2.04083e+006 -deps 1.e-7
 
 removefeatures result a a_1 a_6 a_8
@@ -24,7 +23,7 @@ CheckIsFeatureRemoved a_6 {f}
 CheckIsFeatureRemoved a_8 {f}
 
 checkshape result
-checknbshapes result -wire 25 -face 23 -shell 1 -solid 1
+checknbshapes result -wire 14 -face 12 -shell 1 -solid 1
 checkprops result -s 422201 -v 2.042204e+006 -deps 1.e-7
 
 checkview -display result -2d -path ${imagedir}/${test_image}.png
diff --git a/tests/boolean/simplify/A3 b/tests/boolean/simplify/A3
index 323ad0cf8b..dea65e271d 100644
--- a/tests/boolean/simplify/A3
+++ b/tests/boolean/simplify/A3
@@ -37,7 +37,7 @@ for {set i 0} {$i < $nbp} {incr i} {
 boptions -default
 
 checkshape plate
-checknbshapes plate -vertex 212 -edge 318 -wire 110 -face 109 -shell 1 -solid 1
+checknbshapes plate -vertex 202 -edge 303 -wire 105 -face 104 -shell 1 -solid 1
 checkprops plate -s 18541.7 -v 64444.2
 
 checkview -display plate -2d -path ${imagedir}/${test_image}_2.png
diff --git a/tests/bugs/heal/bug27000_1 b/tests/bugs/heal/bug27000_1
index d9472c1639..066ee4f1a8 100644
--- a/tests/bugs/heal/bug27000_1
+++ b/tests/bugs/heal/bug27000_1
@@ -1,4 +1,4 @@
 restore [locate_data_file bug27000_1.brep] shape
 unifysamedom result shape
 checkshape result
-checknbshapes result -vertex 62 -edge 90 -wire 36 -face 34 -shell 2 -solid 2 -compsolid 0 -compound 1 -shape 227
\ No newline at end of file
+checknbshapes result -vertex 60 -edge 87 -wire 35 -face 33 -shell 2 -solid 2 -compsolid 0 -compound 1 -shape 220
\ No newline at end of file
diff --git a/tests/bugs/heal/bug27894 b/tests/bugs/heal/bug27894
index a2064ba7b7..8661631fbc 100644
--- a/tests/bugs/heal/bug27894
+++ b/tests/bugs/heal/bug27894
@@ -1,3 +1,5 @@
+puts "TODO OCC30320 ALL: Faulty shapes in variables faulty_"
+
 puts "============"
 puts "OCC27894"
 puts "============"
@@ -10,6 +12,8 @@ stepread [locate_data_file bug27894_usd_raises_Standard_NullObject.stp] a *
 renamevar a_1 a
 unifysamedom result a
 
-checknbshapes result -m UnifySameDomain -face 18 -edge 45
+checknbshapes result -m UnifySameDomain -face 9 -edge 21
+
+checkshape result
 
 checkview -display result -2d -path ${imagedir}/${test_image}.png
diff --git a/tests/bugs/modalg_6/bug27271 b/tests/bugs/modalg_6/bug27271
index 467e30695b..b92ea2e14c 100644
--- a/tests/bugs/modalg_6/bug27271
+++ b/tests/bugs/modalg_6/bug27271
@@ -8,4 +8,13 @@ puts ""
 
 restore [locate_data_file bug27271_Shape.brep] a
 unifysamedom result a
-checkshape result
\ No newline at end of file
+
+checkshape result
+
+checknbshapes result -vertex 44 -edge 81 -wire 45 -face 35 -shell 3 -solid 3
+
+set tolres [checkmaxtol result]
+
+if { ${tolres} > 0.003} {
+   puts "Error: bad tolerance of result"
+}
diff --git a/tests/bugs/modalg_7/bug30174 b/tests/bugs/modalg_7/bug30174
new file mode 100644
index 0000000000..2a4eac8574
--- /dev/null
+++ b/tests/bugs/modalg_7/bug30174
@@ -0,0 +1,20 @@
+puts "============"
+puts "OCC30174"
+puts "============"
+puts ""
+###########################################################################################################
+# ShapeUpgrade_UnifySameDomain does not unify cylindrical faces
+###########################################################################################################
+
+restore [locate_data_file bug30174_cylinder.brep] a
+unifysamedom result a
+
+checkshape result
+
+checknbshapes result -vertex 2 -edge 3 -wire 3 -face 3 -shell 1 -solid 1
+
+set tolres [checkmaxtol result]
+
+if { ${tolres} > 2.e-5} {
+   puts "Error: bad tolerance of result"
+}