works for me
Command: xattach
Attach Xref "Test": C:\Test.dwg
"Test" loaded.
The command is XATTACH
((0.822724527413075,-0.568440280058454,0,840.784370459755),(0.568440280058454,0.
822724527413075,0,643.446602615863),(0,0,1,0),(0,0,0,1))
also,
you may want to restore the layer to the previous setting ..