Backing up

If I want to back up an earlier vassal engine and then install the updated vassal, how would I protect the earlier one?

If you use Windows, when running the VASSAL installer you choose a “Custom” install instead of a “Standard” install. This will detect earlier versions and give you the chance to retain them instead of auto-removing them.

On MacOS, simply rename the older app so you can distinguish it from the newest one.

Thank you. I got the install to work without removing my earlier version. Thank you.