I lost some notes by moving them out of a group to the next level up:
where NoteA-F resembles 6 notes. Therewhile 5 of the notes went missing and I tried to restore them from the 'deleted notes', but it didn't work properly. The notes are there but the content couldn't be restored and the message reads:
Wait while this page is being synchronized.... We are waiting for another device to finish uploading your notes. The section was last modified on 26/10/2021 16:12.