noob question: how to save newly created player

Hi!.. I recently created five new players from scratch.. played with it last night, I used the houston rockest team, replaced the players with my newly created players.

This morning when I checked, the roster for the houston was back to its original, and all the players I created was missing.

was it not saved?.. How can I retain new created players?

thnx in advance

You need to save the rosters in the Load/Save menu to ensure any changes to the rosters can be re-loaded later.