I need this also, but not for the same reason. I’ve created user accounts on several large/medium/small instances to serve as redundancy in case one or more of my favorite instances is having technical difficulties or just gets decommissioned. I’d like to synchronize my community subscriptions across multiple accounts so that I can easily switch between user-accounts/instances without missing anything I’m already subscribed to.

In my search, I did find this “Lemmy Migrate” script, but I’ve not yet had an opportunity to dive in and try it. Take a look, maybe it’ll work for you.

Announcement: lemmy.world/post/226441

GitHub project: github.com/wescode/lemmy_migrate