I am using the Key Management dialog of Enigmail (in Thunderbird) to manage my keys, as it's more convenient than command line, but also more stable than the GnuPG alternative (Kleopatra).
So now I ran into a problem in that I added two more identities to the key, but I cannot get it signed again with another key, because allegedly the key is already signed with that key. This is of course true, but the newly added identities are not signed, yet.
How can I "renew" a signature (be it from another key of mine or other people trusting me/my key) so that all identities on the key are signed in the end?
Note: the solution can be command line as well, that's fine. But at the moment I'm at loss as to how to proceed.
Using GPG version 2.0.19