Dear Andy,
I'm waiting that the package is making its way do debian/bookworm, then I will try to relocate_by_id my subfolder to the uuid of my user.
I'm watching closely what your are doing.
I have already question:
knowing that I have cp all the content of /var/spool/cyrus/mail/f/fuser to /var/spool/cyrus/mail/uuid/x/9/x9<blala>/ and that I can see my mails in my inbox but I don't see any other mailfolders, should I delete everything under uuid (how should I do that?) and reelocate_by_id?
Regards
FR