Display error, Wall joins

[matt k]

Hello.
In a workshared project with 8 floors,on one of the levels a lot of interior walls suddenly stopped joining even though they should( the blue dot is half-way over on both). This happens when I try to draw new walls in this view as well. This affects all floorplan and 3d views of this level.??? Do I have to rebuild the level and make a new central file.
Picture of wall join is attatched. They meet like this: L

[patricks]

What are your top and bottom constraints for these walls? Bottom at the floor level and top at the floor level above? Could there be walls on other phases interfering, or walls on other levels that may be slightly overlapping and interfering?

[matt k]

Solved.
Copy of walls pasted into another visible workset, resulting in similar walls overlapping.