Ian M. said: Being able to toggle back and forth would be amazing, and i'm hoping the older sheets still have the missing info as several custom items where either in faction handler notes or additional notes on the original sheets No worries about that: the legacy sheet used mostly different attributes from the new one. The migration script only copied data between them; it didn’t modify the original values at all. There are only two real risks of data loss: The gear, weapons, and talents tables share the same name, which means they also share the same repeating row IDs. However, the attributes in the rows themselves don’t share names. This means that some rows will appear blank in one sheet or the other because of the buggy initial migration script. If these blank rows are deleted, they are gone for good. Extra blank rows should no longer be an issue after the update that was published last week, but if they were deleted before that update then they are gone for good. If your characters still have blank rows in the gear, talents, or weapons tables, make sure that all old data has been successfully migrated before deleting the blank or duplicate rows. If all rows did successfully get migrated, you are good to delete the extras; they still have the legacy data included. Some input fields changed types between the migration. If these were edited after the new sheet was released, and if they shared the same name as their legacy attributes, that different-typed data might be lost. The only example I can think of would be the base attributes (brawn, coordination, etc.): these are numbers now but were text, and they have the same variable name between versions. If you indicated things like superhuman attributes in text, that might be gone if you edited the attribute in the new sheet . This is because the input fields for each attribute have strict typing, but the underlying variables are all treated as strings by Roll20. I pushed an update last night which adds fields for superhuman attributes, so once that’s approved by the Roll20 team you can mark them that way.