Dynamic Lighting Conversion - Character Sheets Gone

Hello, I ran the UDL conversion tool on a Curse of Strahd campaign (purchased on Roll20, that we have been playing for a long time now) and as a result all of the "Character Sheet" tabs seem to have vanished from within the game. This applies for both PCs and NPCs (both original to the module and ones that have been created by me). Is there any way to resolve this issue easily or are they gone forever? Franbo P.S. I made a backup first, so there's that, but this is a pretty poor result after the 1.0 announcement.

... actually nope, it was user error. When I made the back-up copy I failed to note that the character sheet (D&D 5e OGL) was not automatically applied and was left blank. When I added this back to the game via settings, the "Character Sheet" tab re-appeared. Problem solved.