Looks to me you will need to export your dynamic list to a file. See http://forum.mikrotik.com/t/how-can-i-export-dynamic-address-list-entries/103513/1 for some examples.
Upload that list to a FTP server and make them available via a http server.
Grab the rsc and import it where you need it. See https://wiki.mikrotik.com/wiki/Manual:Tools/Fetch
I am sure there are simpler methods, but none comes to mind at the moment.