Datamart Missing Table in ETL JSON

I am also looking for a solution to this same problem. I have tried deleting all tables associated to the missing table and replicating the missing table, neither have worked. I have also tried the automated suggestion of loading transform data and clicking save, which results in the same error. Lastly, when prompted if i'd like to continue editing after the error or disregard my changes, it won't actually disregard the changes when I select that option. Any solutions would be appreciated! At this point I'm trying to find a way to rollback my datamart to before I added the table as nothing else seems to stick.