I don't suppose boost could add a "migrate to another instance" feature? ๐ Given that Lemmy is decentralized, and account migration is a thing and up to users, having support in the app would be really cool.
Or maybe it's already there and I just don't know about it?
Use the website, it has an option to export your data to a file, and then import it. You don't need any 3rd party apps or anything.