I have a Revit model that contains a series of wall joined together and I want to edit their location. After trying the solution here
http://thebuildingcoder.typepad.com/blog/2010/08/edit-wall-length.html
it happens that I can only apply the modification to a single wall element but not a group of walls joined together. I always receive the error message that my walls (right after I commit my modification) can not be joined, and all the walls can not be re-created except the last one from my modified wall list.
If I modify them all then commit the change instead of commit right after each modification, all of the wall are reported can not be re-created.
I suspect that the walls are un-joined and/or overlapped after the change, but that is not possible from my modification data and my debug info.
What is the cause of the problem and how to fix it?
You can unjoin a wall by setting its LocationCurve JoinType property.