Hi,
I've open an ER when I was on NX 7, but now I'd like to share whit you if it's a time to reopen it again.
Normally, when we start a new project we put parts at the same level and constraints them. After coding, we create a sub-assembly structure. During this process we lose constraints after moving parts on different level.
I can understand for parts that go on different sub-assembly, but if part1 is related with 3 constraints to part2 and they go to sub-assembly1, why they lose constraints ?
SolidWorks that use the same technology doesn't have the problem.