Backdating of flags?

Is there any way to back date a flag? Long story short I was erroneously flagged while slotted for ALC. Ended up getting dropped from the class cause of the flag and was told my HRC I needed a packet signed by my first GO in my CoC to get rescheduled. This was two years ago, getting packets all the way up to division is...difficult...anyway I recently contacted the ALC schools guy and he told me if I can get him a 268 with proof I was flagged erroneously he can slit me in attrs. The kicker is I no longer have the flag paperwork and don’t know where to go to find it so to get said 268 it would need to be re made and signed off on.