I've been following the directions here for creating a GPG key and storing the master key offline.  Everything went exactly as the directions said.  However, after the directions on how to remove the master key, I tested gpg --import public.gpg-key private.gpg-key to see if it would restore the master key to my keyring.  But after doing that, gpg --list-secret-keys still showed sec# for the master key, indicating that the master key isn't there.What am I doing wrong?(In the meantime, since I'd backed up my $HOME/.gnupg before the step of removing the master key, I restored it, made sure it was good, added a copy of that .gnupg  to the external media on which the master key exists (in addition to all the files created by following the directions), then re-deleted the master key.  I figure that in an emergency I can temporarily replace the my .gnupg with the copy I'd saved.)
Help getting offline GPG master keys right
gpg