I have a subassembly that I've made which contains a part that is in a rollback state. I could assemble the part into the assembly even though the part was in a rollback state. Now I'm trying to assemble the new assembly into another assembly, but it says I'm not allowed to because one of the parts in it is in a rollback state. This does not sound logical. Is this really expected behavior or is something broken?

2008 sp5.0