Yes, you can do that--however I'd strongly suggest against mirroring components in an assembly.
Either copy-paste the part you need duplicated, or use the Pattern Components feature.
Mirroring in an assembly can cause issues with the entire assembly--and it renames the parts you've mirrored...
My assemblies are HUGE, and I frequently need to turn off several parts in order to insert yet more parts.
Without having to hunt thru the browser, is there a short-cut to return All Invisible Parts VISIBLE?
I am assuming you checked the Inv Help files before posting this question.
Did you select all the components you need in the pop-up when you start making the derived part? If so, the only other problem I can think of is there is a some sort of interference in your assembly. Try Tools--Analyze...
When using PATTERN COMPONENT, you have two options;
"Feature Pattern Select" which is what you referred to, or you can pattern by Array (rec or circular)which is very similar to Autocad Array command.
NOTE: All programs seem to have quirks, and I have used a number of different cad apps. CAD...
That certainly is faster than hunting thru the browser.
Does that mean there is no way to keep work planes turned off, so that they don't always show up when opening an assembly?
When working with an assembly, any assembly, I often constrain parts by working planes & axis--which are made in the assembly file.
I always turn them off once I'm done using them, and make sure all working planes & axis are turned off before I save and close the assembly.
However, every time...
I only use Mirroring for features in individual parts. In assemblies, Mirroring causes alot of problems, the least of which you have described.
When presented with the type of problem you describe, I use PATTERN COMPONENT which retains all the constraints used and doesn't muck things up.