Join function - Wall joins disconnect after saving

[Anonymous]

Hello,

I have a very strange problem when using revit function Wall Join. 

At the moment I am making an appartement building in Revit.

 I am working to the level LOD300/LOD350. 

The problem :

After I join walls it looks good,  but when I save the project en restart the next day some of the joins are disconnected just when I open the file... 

I will send some screenshots. Is there someone that can help me understanding why revit does that? It is very annoying and frustrating. 

The first attachement is the situation before I save.... The second is after opening Revit... I didnt do anything... 

[ennujozlagam]

have you try to open in another computer and see if the same? try to install latest updates from autodesk and see if helps. thanks