Not sure but i dont think changing the ID wont help .. like i said its best to used a team already in FM rather than changing ID or making new custom team...(u can still change everything like a custom team from scratch)
There seems to be a problem on FM about ID especially on custom team. The ID in the editor (when u created a team from scratch with the editor) and the IN GAME ID is not the same. I face the same problem.....Try create a new custom team again BUT this time USED a TEAM that is already in FM...