from WENB:
However, when the data pack downloads it will reset your squads UNLESS you follow what the boys from Only Pro Evolutions have said:
“IMPORTANT: When you install DP3, you’ll be asked whether you want to update your line-ups.
If you want the thirteen new boots but you don’t want any changes to your squads and line-ups, when asked to, DO NOT APPLY the line-ups update and your option file will not be harmed. ”