I have the same issue.
Customer service said the following in a case below. It seems they are unaware that there is a transfer account button on the seller central.
I highly doubt it takes 20 weeks or a year to get the new owner verified.
My name is Lian. I understand that you have queries about Transfer account option.
If you would like to request to change the account from [LE1] to [LE2], such request needs to be reviewed on a case by case basis by the Verification Team. Please email the Verification team directly with the following information for their consideration, if you decide for a transfer:
For the Current registered entity:
•Name of the current entity:
• Country of Establishment:
• Type of entity:
• Beneficial Owner(s), if applicable:
• Reason for the change:
• Will the original entity be dissolved?:
For the new entity you're requesting to change to:
• Name of the new entity:
• Country of Establishment:
• Type of legal entity (e.g. limited company, partnership):
• Beneficial Owner(s) of the new entity, if applicable:
Their email address is seller-verification-enquiry@amazon.co.uk , but please ensure you email them from the primary email address of your account.
Please be aware, such legal entity changes cannot always be approved as it is not legal possible. In such cases, the Verification team will ask you to open a new Payments account with the new legal entity details.
***IMPORTANT***
On average, such requests can take 20 weeks or more for a decision to be made, even I saw a case which takes around a year, but it does depend on each individual situation, and this process cannot be expedited by the Verification Team, or by us here in the Verification Assistance Team.