GAME SAVE FILES AUTO DELETED THEMSELVES MULTIPLE TIMES!!

Recently I've been playing manager career and player career with multiple save files and I've gone back to a previous save for a different team only to find that it has deleted all of my progress without asking my permission! EA PLEASE FIX THIS IM TIRED OF HAVE HOURS OF WORK GO DOWN THE DRAIN!! If you need proof that I made the saves I have a youtube channel with the matches I've played in the live stream Snowyplanet1 on YouTube.