If I delete from lightroom local (not cloud) does it delete from the original source too?

in the future, to find the best place to post your message, use the list here, https://community.adobe.com/

p.s. i don't think the adobe website, and forums in particular, are easy to navigate, so don't spend a lot of time searching that forum list. do your best and we'll move the post (like this one has already been moved) if it helps you get responses.

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if you delete from a syncing source, it will delete from the synced locations, too.