How the management to save dorico ipad 2.3 files works?

It is correct initially I also had the dorico folder with the files I had before the update but I decided to reinstall the app to see the problem I mentioned in another post (when exporting a midi or xml file a file is generated in the dorico ipad hub which I can not delete, the option appears but the file simply does not delete and does not open (it says error). Dorico iPad and iCloud

Then after reinstalling the app and restarting the iPad is that happens what I mention