any one have this issue??:
I have a slab with about 7 components; I draw a standard rectangle and create a slab , no problems, I then add another rectangle (overlapping) and select both and add surface, all works , original slab is extended.
If however I try to add another area with the same add surface workflow, it will not join onto the slab, unless its a new edge of the original slab.
note - it seems to work fine if the rectangle overlaps the original slab but will not extend an already extended piece... ie. the orange bit won't add onto the white slab bit
slab.vwx