I have sometimes tried to understand the behavior of frag wise or whatever name it has, which defines how many frags you will receive, especially when you are close to upgrade/max out any unit.
My Rebel HQ 8 received 15 frags for TX-225 in the previous Crate, and I am almost sure I had 386 accumulated frags, and I thought if I receive 15 frags for TX-225 again, then it was over! I opened Crate and it had this:
I checked the frags on the Unit screen, and it showed TX-225 with 398/180. So I reloaded the game several times and kept showing 398/180.
So game doesn’t reduce the number of frags received as I was thinking, it doesn’t steal the frags, but it just shows wrong the number of frags received? Maybe it’s a display error, and I must have received two rewards with 6 frags for TX-225 on that Crate? Every time I am close to max out any unit, the frag wise goes crazy and confuses the numbers, or else it is the worst in mathematics than me!