I'm afraid it is not yet to late for these propositions...
> It would be nice if by right clicking on a contact a menu would allow to select, to which contact file, resp subfile the selected address ought to be moved.
> It would be nice if if by right clicking on an contact in the contacts list that Menu would contain also a command for copy to another contacts list. Now, at least I have the feeling it is so, it is only with tricks (by giving two diffent names) possible to have the same address in diffenrent address books.
ente
other solutions are warmly wellcomed