When I turn sub-assemblies into virtual ones it used to ask me if I wanted to turn just the sub-assembly or also the parts within. I usually said just sub-assembly. This is not happening anymore. When I turn sub-assemblies into virtual ones it renames the whole tree to "copy of" without asking.

I've been searching in the option window, help, etc and I can't find the way to make it ask again.

Anyone can help me please?