Hello, I have a glock 43x that I purchased the frame and slide separately so there serial numbers are different which I know the only number that matters to the feds and MA when “completed” is the frame. My question is if the frame got damaged and was sent back to glock and came back as a replacement frame with a different serial number what must be done? Does that new serial number have to have an FA-10 completed? Also what must be done if anything to the old frames serial number in regards to MA since its registered.