Edit2:
Okay, finally I am confident that I got them all!
Got a torrent client set up, and went to
https://academictorrents.com/details/c398a571976c78d346c325bd75c47b82edf6124e/tech&filelist=1
It turns out that you can just download individual subs. I know exactly which ones I first commented on, it was a small list and the subs themselves were pretty small too. So downloading just those subs from the torrent was pretty speedy and easy.
After that I came up with a quick script (based on the example scripts by the pushshift team's github) at https://github.com/Watchful1/PushshiftDumps
I was able to modify the super useful script at https://github.com/luphoria/reddit-migration one last time to accept a list of comment ids in a text file, and then overwrite them all.
Looks like I won't be needing that GDPR archive after all, thanks for nuttin reddit!!
Hat-tip: https://news.ycombinator.com/item?id=36038684
Edit: confirmed with someone in the PSA thread that this doesn't work. See https://kbin.social/m/RedditMigration/t/47320/PSA-If-you-have-more-than-1000-posts-more-than#entry-comment-200913
Original post below:
I'm having the same problem as the commenter here: https://kbin.social/m/RedditMigration/t/41129/Just-started-the-process-of-editing-all-of-my-Reddit#entry-comment-180921
In my case I can see my comment history much further, but still about six months short of when I created my reddit account.
My post history seems go to back to my very first post, but I have a lot fewer of those.
For now I just edited my comments, but I'm wondering if I should also do a delete. If I delete say 400 of my newest comments, will I see 400 more older comments show up in my profile? And if so, how long will it take to refresh?
I'm willing to experiment and try and find out for myself, but was just curious if others had already experienced this.
(Of course, if it actually doesn't help - deleting new comments won't bring back the older history for me to backup and edit and delete - then I'd rather not delete anything at all and just leave my farewell message everywhere.)
I adapted this script to do what I needed, including printing out a count of comments found, as well as the permalink of each comment (so I could double check the date).
https://kbin.social/m/RedditMigration/t/16226/Wrote-a-script-to-edit-all-my-posts
From my own experience, the comments (and posts) that have resurfaced are from those subreddits that have stayed in blackout, but are open at the time I checked.
Thus, and though this is me talking in hindsight, I've made a (bash) script that would execute Shreddit three times a day (via cron). I eventually would resort to manual deletion after June 29, but until then, I can rest easy that whatever resurfaces would get shredded.
Just to be sure though, I open Reddit on an incognito window (or even a separate browser I never used Rəddit on) and check things myself, usually by opening my profile page(s) and seeing if there's still any comments/posts left.
This is my plan as well, I think there's just one major sub left where I need to delete and they're going public (at least for a short time) next week. So I'll keep running.