Not sure i can explain it well, but general idea is this - i have had autotraced designs dropping elements because they were closed shapes, but were not supposed to fall out (be standalone element), not connected. Difficult to catch by eye.
Is it possible to make some sort of warning system to warn me if stuff inside outermost border is a standalone object ?
Something like this:
Fig.1, simple shape, where middle falls out.
Fig.2 where middle shape welded in and only quadrants fall out
Fig.2 where welding has been overlooked/missed and middle square becomes standalone object within outer boundary of outer shape.
This is very oversimplified example, but when very complex shapes concerned it would help.
Do i make sense ?