Save file corrupt- Please help ! Cod bo2 keeps erasing my rank level

Let's try to power cycle your console. Please hold down the power button on the front of the console for approximately 15 seconds until the power light shuts off. Wait about 60 seconds, then power it back on. Be sure you see the green "XBOX ONE" animation
loading screen when you power it back up. then check you're local save data and erase it the one From Cod bo2 then enter the game and play then check if all is ok

Hi BECKTOWN,

Thanks for reaching out to us here on the Forums!

We understand it is concerning when the Rank Level keeps resetting or lowering to a different amount. Unfortunately this is an in-game issue. The game lobbies tend to have modders which make changes to others' stats and that is something we here on the Forums
cannot control. That is why I recommend contacting their support. You can visit
Activision Support. With them you can create a ticket with their support team or visit their forums for more information.
I will now be closing this thread, since they are the ones able to best assist you.

I hope this information helps. Thank you

Will this erase everything and start me over or just allow me to clean up the corrupt file and keep all unlocks?

you already have the partial game saved in hard drive memory. are you erasing it before you start over? if the file is corrupted you will never be able to complete the download. erase and start over again

I can't even play the file though since it's corrupted. Unless you mean to use my level 1 character (that save isn't corrupted)