[2023] Jagex Account Email, and Characters with Same Email

I am interested in potentially migrating my characters to a Jagex Account, but I have some odd circumstances and wonder if anyone else has successfully migrated to a Jagex Account with similar circumstances:

For the purpose of this post, I have 3 characters:

1. My original character, which logs in with its username, but is associated with my primary email address
2. Another character I barely played, which logs in with my primary email address
3. My Ironman, which logs in with my secondary email address

I don't really play my original character anymore, but I'd still like to link it regardless. I pretty much exclusively play my Ironman. I don't care if I lose the 2nd character. When I make my Jagex Account, I would like to use my primary email address, but I have concerns on how this will interact depending on what character I migrate first.

• Should I migrate my original character and make the Jagex account, then add my Ironman?
• Should I migrate my Ironman to the Jagex account but use my primary email address during account creation, and then add my original?
• How would the fact that I have two characters associated with the same email address work in this scenario?

Thanks.