The PLM-PWC card is not supported by the Expansion Box 2 at this time.

It was always possible to backup and restore LCP files via the ProfiLux. Instructions for that can be found here:
https://www.aquariumcomputer.com/kno...lightcomposer/

If you want to put an LX7 over a different tank with a completely different schedule, you can do so by running that fixture on Standalone mode. If multiple fixtures are going to be over that same tank, the other fixtures over this tank would have to be set to "Slave" mode. In order for groups of Mitras LX7 not to interfere with each other, the 2nd group and its accompanying fixtures must be set to a different channel.