Originally Posted by
simbun
It feels like that option would only prevent it from being updated, so do your source files have the tag - I say that knowing you shouldn't be converting lossy to lossy but I haven't been able to replicate your scenario using mp3 (I don't have the apple codec installed).
To remove the tag, in the dBpoweramp Music Converter screen, add the 'ID Tag Processing' DSP and on the Deletions tab add the tag you want deleted (using Single Tag) or add all the tags you want to keep (using All Except).