Import game save to XB1-Update wiped out BL2 game save

So i purchased BL2 for the xbox one and went to import my 360 game save. I updated Xbox 360 and then updated BL2 and when I got to my BL2 dashboard … no more game saves… 5 characters and tons of weapons all gone… what happened?

Are the save files still on the 360? Go into System > Storage > drive > Games & Apps > BL2. If the files show up there, check whether or not there’s a ! beside the name, and which XBL profile they’re attached to (should show in the file list along with the character name and level/location).