Overwrite the existing key

[Sasa Danicic]

I would like to know, because I couldn't find in documentation something
similar:

presume that user AAA has got BBB's public key in his keyring. In case
that BBB decide to change its public key from some reason, what's
happend when AAA want to import BBB's new/changed public key?

Does existed BBB's key will be overwritten in AAA's keyring or not?

Regards,
Sasa Danicic

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