I uploaded JSON files from the Settings section, as always. Everything was OK, but I could not find new tables, that should be created by the imported JSON files. Then I found all the JSON files in the Files folder.
Just to mention - I have already uploaded exact the same JSON files multiple times to other backendless app, and everuthing worked perfect. Now, all my import (JSON) for all of my apps goes to Files, not to Data. If I try to upload my JSON again it gives me an error “The migration operation is already in progress…” And now I’ve already waited for 2 hours.