It is easier to build a complex geometry in parts and assembling them together by inserting the geometry into a master assembly. It also makes selecting groups easier as there are not as many facets to work around. When you insert a geometry with selection groups in them you will see them listed in the master assembly but when you try to use them you will get an error like this…
Other times…I think…I’ve seen it select the wrong facets as if the facet list is wrong. I’m using MAC ARM 2.9.18 beta but I’ve seen this in many previous versions.
Formulas and selections should be renumbered upon insertion by offsetting facet numbers with the existing number of facets.
I wrote new code this august to unify inserting and loading models (to avoid duplicate code doing almost the same thing), and I made a mistake to offset formulas after the geometry is inserted - facet numbers were offset with the new number of facets. This bug was present since 2.9.15.
You can download a temporary, fixed version here (use build-artifacts column):
