that’s the point of this feature request / bug fix.
i’d like to enable “clear tags”, but “preserve cover art”. the keep function allows me to keep all tags, but not coverart.
as rdswift points out, i can do it manually, but that’s not efficient. what’s missing is a setting to “preserve coverart” or a way how the keep function enables this. and/or a way to allow me to “existing tags” in the list of tags to use (besides amazon, archive, local tags, etc).
besides the mp4 issues, this for me is the major shortcoming of picard versus jaikoz and prevents me from retagging my library.