No clue what you meant here.
What basically is the situation is i'm used to Ptc Creo. And in creo there is some hierarchy related to objects.
Int parts the following order from stable to least stable:
- planes/ axis /CS (basic stuff without ...
- surfaces
- edges
- points of objects there is a better name for that but i'm lost is now it's late
that same for assemblies
- Assembly planes/ axis /CS (basic stuff without ...
- part planes/ axis /CS (basic stuff without ...
- part objects
- surfaces
- edges
- points of objects there is a better name for that but i'm lost is now it's late
Same is related to objects on a drawing a line related to a edge is easy to break since it change often.
a surface is much more difficult to break since it change a few.
planes are almost imposible to break they can move rotate everything but seldom removed and thus seldom lost.
this is more or less the contex of my response.