finally your plugin seems to be the only one that works for my needs (changing status of expired posts to draft without deleting the categories and tags of the post).
I have a page where all expired posts of a specific category are shown by a shortcode. That works fine, but the URL of the expired posts are not very search engine friendly:
http://www.mydomain.de/?p=808 (or any other number)
How can I influence the structure of the expired posts? My non-expired posts have the permalink I can give them in the post edit.
Thx for helping,