I dont think lemmy supports this. Posts and comments on your “old” account will stay there and if you look at that profile from the view of another account, will still be visible.
Maybe exporting them as a downloadable archive is possible? So you could keep a copy on your desktop? I dont know.
tiramichu@lemm.ee 2 days ago
All your old stuff will stay visible even after lemm.ee goes down, but it won’t be linked with whatever new user you create on another instance.
If export and import of posts and comments was possible it would result in “duplicating” your posts and comments to your new account, which as you might imagine would be an absolute mess, so you can presumably understand why it isn’t.
hempster@lemm.ee 2 days ago
Is it possible to export these for offline viewing?
tiramichu@lemm.ee 2 days ago
Not that I’m aware of. The Lemmy APIs provide access to that data but I don’t know of any existing tool that uses it for the purpose of exporting posts or comments.