After more than 7k hours of gameplay i just noticed that u can shift+leftclick the replace buttons and then choose how many u want to refill. This is something i would have liked to know a little earlier....

sers,
Thomas
Moderator: Panzer Corps 2 Moderators
Ah, I did not think of that, but it would use up two turns sadly.
If u mix u can make sure that full stars stay while only removing excess xp.