To answer your original question, not an option in the core oldie command that has never been fixed.
XOPEN command, select your XREF, select those objects then CTRL+C them.
Close XREF.
In your top file, PASTEORIG if as you say all things are in exact locations. If not, use CTRL+SHIFT+C to copy with manually selected base point and CTRL+V to select the same base point in the top file.