diff --git a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
index fbe959af5e..9914c783d7 100644
--- a/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
+++ b/OpenSim/Region/Framework/Scenes/SceneObjectPart.cs
@@ -1505,6 +1505,7 @@ namespace OpenSim.Region.Framework.Scenes
                 }
                 else
                     m_physicsShapeType = DefaultPhysicsShapeType();
+                ParentGroup.HasGroupChanged = true;
             }
         }
 
@@ -1518,6 +1519,7 @@ namespace OpenSim.Region.Framework.Scenes
                     m_density = value;
                     ScheduleFullUpdateIfNone();
                 }
+                ParentGroup.HasGroupChanged = true;
             }
         }
 
@@ -1528,6 +1530,7 @@ namespace OpenSim.Region.Framework.Scenes
             {   if( value >= -1 && value <=28.0f)
                 m_gravitymod = value;
                 ScheduleFullUpdateIfNone();
+                ParentGroup.HasGroupChanged = true;
             }
         }
 
@@ -1541,6 +1544,7 @@ namespace OpenSim.Region.Framework.Scenes
                     m_friction = value;
                     ScheduleFullUpdateIfNone();
                 }
+                ParentGroup.HasGroupChanged = true;
             }
         }
 
@@ -1554,6 +1558,7 @@ namespace OpenSim.Region.Framework.Scenes
                     m_bounce = value;
                     ScheduleFullUpdateIfNone();
                 }
+                ParentGroup.HasGroupChanged = true;
             }
         }