What about forking lasim, which is now inactive? https://github.com/CMahaff/lasim
It’s better than the built-in option because it gives you more options. For example, if I only want to add blocks from one account to another without overwriting any other settings. I don’t see that your tool allows for that.
Thanks for the info!
The 2nd screenshot https://github.com/StableNarwhal/Lemmy-Userdata-Migration/wiki/How-to-only-export-or-transfer-a-part-of-my-user-data,-e.g.-blocked-instances%3F shows that feature already exists?