In case it was unclear, here were my old settings, which produced a cover depending on the existing one:
Code:
[defaults]
replace_metadata:
## Prettyizes fanfiction publishers.
site=>www.fanfiction.net=>FanFiction.net
site=>archiveofourown.org=>Archive of Our Own
generate_cover_settings:
## Per-publisher
${site}=>^FanFiction.net$=>FFNet
${site}=>^Archive of Our Own$=> AO3
My new one, which doesn't embed existing covers:
Code:
[defaults]
replace_metadata:
## Prettyizes fanfiction publishers.
site=>www.fanfiction.net=>FanFiction.net
site=>archiveofourown.org=>Archive of Our Own
generate_cover_settings:
${site}=>^Archive of Our Own$=> AO3
[www.fanfiction.net]
## Embed cover in generated cover
generate_cover_settings:
${cover_image} => (specific|first|default) => FFNetWithImage
${site}=>^FanFiction.net$=> FFNet
I ran "Update Always" with "Update epub cover" checked.