the only time you need the same real time map as base is if you flashed a economy,anti theft etc. over your original base map.
that is how you remove the flashed economy,anti theft etc.
when you originally flash the base it automatically becomes your real time,until
you flash another real time .
you also can re-set the ecu by pulling the neg.terminal off the battery.the realtime maps you flashed will be removed.and you will now be running the same realtime map as base.