I've inserted a cavity feature to a part and trying to add parts to it. But some of the parts I am trying to add were created as mirror images of other parts. So, while I can add the original parts to the cavity, their mirror images cannot be added. Or maybe they are added automatically together with their parent components? Is there a way to check if they were added or not.
I am attaching a screenshot which illustrates what I am trying to do. The two lower components in the assembly tree are mirror images and it looks like they were not added to the cavity.