Hello remus
Thank you for your reply.
I already have Layer Manager v6 installed, but there is no functionality for this feature. I am still searching.
The workaround is to open an additional SU window and a coy of the file in question, rename a suitable layer to make a replica copy of, and copy and paste an object on that layer into the target file in the other current SU window.
This is surely more time consuming, hence the request.
Kind Regards
Syd