I can’t find my problem… Apparently it exists since a while as even a redeploy didn’t fix it. The same problem occours in the panel: An empty default blueprint is loaded. When I make any changes (e.g. to the title) and save, the changes are not persisted. Any ideas?
EDIT: solved. This is really weird. Within the folder of the page there’s a PDF file. This PDF has three associated metadata files, as there used to be a swiss version which is disabled for now. However kirby took the swiss metadata file of the PDF which was still there, appended de-de.txt for the german-Germany-version and used that as the content file?! All changes made in the panel were reflected in there. A first fix was to delete all PDF metadata files, which lets me fear that this problem will reoccur if I create them again.