[question] - Changing Private All-Star team-up lineup

Hello guys, after some months searching online and tinkering with the game through the tools that were so kindly made available on this forum I have finally managed to play a private session, with a couple of friends, of an All-Star team-up with custom rosters. However, I found out immediately that after changing the roster the starting lineups always ended up fucked up: all-time versions of players instead of normal ones, low overalls instead of the highest ones league-wise, players listed in mixed orders, etc etc.

Therefore, I'd like to ask if anybody has found a way as to alter the all-star team-up lineup, and if it did, if he/she could kindly share the information.