Fix prim returns I broke earlier

OpenSim/Region/Framework/Scenes/Scene.Inventory.cs

@@ -1637,11 +1637,14 @@ namespace OpenSim.Region.Framework.Scenes
                                     null,
                                     remoteClient.AgentId,
                                     deleteGroups))
+                    {
+                        permissionToTake = true;
+                        permissionToDelete = true;
+
                         foreach (SceneObjectGroup g in deleteGroups)
                         {
                             AddReturn(g.OwnerID, g.Name, g.AbsolutePosition, "parcel owner return");
-                        DeleteSceneObject(g, false);
-                        return;
+                        }
                     }
                 }
                 else // Auto return passes through here with null agent

OpenSim/Region/Framework/Scenes/SceneObjectGroup.cs

@@ -801,7 +801,7 @@ namespace OpenSim.Region.Framework.Scenes
             maxZ = -256f;
             minX = 256f;
             minY = 256f;
-            minZ = 256f;
+            minZ = 8192f;
 
             lockPartsForRead(true);
             {