Need help migrating contacts to a new Delta Chat relay

Mutual Help
2

I assume you have seen guide for migrating to new relay when federation works: How to migrate your profile to another relay (version 2.33)

Maybe something like this will work:

  1. Add secondary relay that federates properly to your current profile. Don’t select this relay as primary so you can still message your contacts.
  2. Create a new separate profile on a well-functioning relay that federates properly. This way you will know that anyone who contacts this profile is on a new relay.
  3. From this new profile create a “migration” group. Create invite link for this group.
  4. From your old profile write an instruction for other group members, telling them to:
    1. Add new relay on the same relay as your new profile.
    2. Select this new relay as primary.
    3. Click the invite link to join “migration” group.
  5. Follow the instruction you just sent yourself: switch your primary relay to the new one, join the “migration” group via invite link.
  6. Wait for everyone to join the “migration” group.
  7. Once everyone has joined the “migration” group, you can abandon it and keep chatting in the old group as you will have new addresses of everyone.
  8. Once you are sure everything works correctly, you can also delete separate profile that was inviting others to migration group.