Jen from FlytrapOnE says:
So if I delete all the "wholesale only" ones (which are duplicated anyhow) and bulk edit to make the rest both, I'm good?
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Yup! Exactly, however I would suggest deactivating the wholesale-only listings instead of deleting. You can always reactivated a listing, but there is no way to un-delete a listing.
So, to get rid of those duplicates you can deactivate all the wholesale-only listings. And then select all of your retail listings, bulk add to linesheet, and you will end up with one set of listings that appear in your shop and linesheet.
Let me know if you have any questions!