Hello, there are many reasons for your question. The most likely reason is that xbox360 supports multiple accounts. That is, two players can open two files, and the progress of the game does not interfere with each other. So your second account can't play with any archive of your first account, so please check whether you play GTA5 in the original account. The second reason is that you may have quit the game by mistake when saving, and turned off the phone, which is hopeless. Third, you deleted your file, but I believe you are not that cheap. So the most likely reason is 1.