Yes it is.
For me, if I need another "copy" of resizable sheet metal, I have to make it again so it's driven from that assembly.
If it's a typical static part that's is used over and over. I make the part, then a draft the part to assign it a part number result (drawing number) from a material part number. Then an assembly from the part. And insert that assembly into the model where the part is needed. Then the inserted part's number is the drawing number by using the assembly to get that number to display in the parts list.
As a result, I never use a "copy" of a part.....what's the advantage?
If the part is not resizable from an assembly, and I need to copy as a starting point for another part, I just copy, rename, and open it using windows.
@RB2, It's not a copy, it's the same part. Think of a screw. You use it in several places but it's one part file being referenced. If you want an independent copy do a "save as copy" and give it a new name. This has the advantage of maintaining any links that may be in use. Using Window's file explorer copy is a crapshoot at best.