@
beedaddy - for EPUBS you can use this PI ==>>
[GUI Plugin] Modify ePub to strip out all non Dublin Core Metadata items (bottom right corner of settings).
With EPUB you could selectively remove metadata items by editing the content.opf file inside the EPUB with the calibre book editor. You might also be able to do this with AZW3, but I don't have any to do a quick test.
BR