Can I move an account's STW founder to a different one?

Skip the first part to ignore rambling; I'm a bad explainer.

^(I have an old Fortnite account on my old Xbox One that I've had since I was a kid, and it has a pre-2020 Founder's STW account. Unfortunately, it is on the device's pre-installed Store email, so I have to go back and reconnect it every time, asking the same clerk from way back then (who, based on the lack of responses, I guess has already moved jobs, considering I bought the Xbox 9 years ago).)

(for short)

Not long ago, I tried looking for a way to migrate the STW Founder account to a new email, and keep the Founders (or just migrate the Founders part, which is less realistic)