If you own a physical copy of Marvel Vs. Capcom: Infinite, there is a chance that a recent update could be affecting your save file. According to a Capcom-Unity post:
we have discovered a serious bug related to the December 5 content update that could potentially result in a loss of saved data for players who own the disc version of Marvel vs. Capcom: Infinite on Xbox One, under a specific rare circumstance.
While Capcom says that there is no official fix at the moment, the post does talk about various ways to avoid encountering this bug if you are playing the game through the disc. You can read all of the steps regarding the bug in the post above.
Are you a fan of Marvel Vs. Capcom: Infinite? Who are your favorite characters to use? Have you encountered the bug after the latest update? Leave a comment below.