These are the same aircraft. While I used four digits for the military serial even with old aircraft, I have discovered that is not correct. So the correct aircraft ID should be 31-559. However, the correct c/n is on 31-0559 and the two are linked.
Suggest that 31-0559 be changed to 31-559, with the correct c/n as displayed on 31-0559, and then all photos can be moved to one with the other profiles deleted
Glenn