Hi,
I think you have run into a known issue here. The problem is that the rebuild process doesn't go all the way through automatically for some reason when you change between different views of the same 3D document.
The fix for this issue should be in the released version of ARCHICAD 22 (build 30xx), and it should be included in a later update of ARCHICAD 21 (build 70xx).
As a temporary measure you can use Rebuild & Regenerate (Ctrl+Alt+Shift+R) to get the edges back. To make sure that the drawings keep the edges, do this manually, and then after you updated the drawings, set them to be updated manually (so they stay like that).
I hope you can get along with this until the fix comes out...
Regards,
Daniel Alexander Kovacs
Professional Services Consultant
GRAPHISOFT
For Troubleshooting and useful Tips & Tricks visit