new SMIME (GPG also?) public keys attached to an email are not saved in the addressbok automatically if adressbook allready has an entry

This leads to recipients getting encrypted emails which they cannot decrypt.
Probably happens because users change their keys and forget to think about the consqeuences, i.e. they trust that any email systems deals with it automatically maybe.

Noted this for smime keys. Might happen with pgp keys as well.