hyperlinks not working

A lot of Hyperlinks in all mindmap files in two particular maps on iCloud drive are directing to a wrong map. When I want to change it to the correct map (by removing and adding again or by replace and find) and saving afterwards then the link is blanked out again and still directing to the old map.

The correct map should be: Databasesmap

All links are directing to the wrong SecITbookmap map

These are the only maps on iCloud drive that are causing wrong hyperlinks.

With the rest of the maps (which are newer) I have no problems