https://heguro.github.io/nostr-following-list-util/ by #[2] is a nostr micro app that can be used to back up and rebroadcast your following list.
Discussion
Oh wow. Hey #[4] this is exactly what you needed. I tested what #[3] shared and it works. You can resend an old follows list and that’s it
The app you should all have at hand. Somehow from time to time you may connect to a weird relay or client that would broadcast an empty or old follows list which is very painful because you would lose all the people you were following
With this app, you can check across relays what is then “follows” list or contact lists they have. Many times some relays didn’t receive your new empty one so they still have the previous and hence you can recover it
Keep it somewhere in your bookmarks as you may need it at some point
#[0]