Hi Jeanette! There may be an workaround with the switchover from legacy to the new editor for Trim Reblogs that should still work (I haven't tested it as I've been using the new editor for months now) that you could test.
So what matters to Trim Reblogs is the root post of the thread, i.e. the initial post of that thread. So let's say a thread is 20 replies--you want to go back to the starter for that thread. Let's assume, for ease, that Partner A was the one who started it, Partner B replied to it. This would then be Partner A's first post that we are looking for.
Previously, Trim Reblogs just didn't work on legacy posts at all until a recent update to it. A way that I found to go around this was by finding the first post of the thread and editing it using the MOBILE APP EDITOR. Not the browser, the Tumblr mobile app for Android/iOs (in my case, it was iOS). By editing it and changing something small--bolding or italicizing a word was my go-to, you could even just bold or italicize a period or something--it sort of "forced" it back to the NPF style post, and then it would be recognized by Trim Reblogs as the new post format (NPF).
It's something I would test & see if it works to possibly get around some of the issues that happen when you're trying to convert old legacy threads to the new editor & Trim Reblogs just continually glitches out (it happens sometimes).
Also, something to note: unlike with the old xKit, you do not have to have your draft written before you save the post in drafts. You can save it as a draft with nothing in it, cut it, and then work on your post with no issues. It won't randomly post your drafts like the old Editable Reblogs did. (Posting drafts is why I got rid of Editable Reblogs myself, because it was just a no-go for me given how often I switch between drafts).
Thank you so much for your guide! I'm glad to see people switching over to the new editor finally, as it's been... a struggle to deal with not being able to cut posts for months now when I got annoyed with Editable Reblogs.
Thanks for the info! That trick of editing the starter post to switch it to NPF is really helpful for people who don't want to go through all the trouble of moving a thread to a brand new post -- I'll edit my couple of posts to include that. I did edit last night to add that you don't need to have your reply written before using Trim Reblogs anymore. I know that was the case before, but now it seems you can trim at any point, like you said.
About the randomly posting drafts issue -- if that is the same problem I've experienced, you can get around that by switching the save to drafts button to anything else, then back. I wasn't aware of this being an issue with legacy/editable reblogs, though it wouldn't surprise me, and I'm not sure if you'll still have the problem on beta. But I've just made it a habit to switch the button before saving to drafts if I know something isn't ready to post yet.
