dont close off all ninja, just change 1 by 1
if u need change move 2 1st , take new ninja for replace u'r move 2. so u'r equip will stay at move 2, it same for move 3 and 4

if u take off all ninja (ofc not with main), they equip will be stay in bag i think, so when u make a new line up with new ninja, u'r equip will become randomly set or we can saying it rec.equipment;P