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n the above case - I also think the same, the moderator does not send a notification to the author of the thread whose post has been edited. The reason for the edit can vary - such as removing a referral link in the thread or other links instead of deleting the thread.
Yeah, it might be, but for referral links, instead of mods editing it, it will be probably deleted.
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I'm not sure what was edited from that post - you can compare it to the archived post by ninjastic. I can't find anything different - both posts are exactly the same with no edit history.
Source:
https://ninjastic.space/post/52162302Ninjastic.space archive starts late 2020, the post you mentioned posted earlier, year 2019. Any earlier posts before the bot creation will be saved as it is.