Hi there Joobles,
If your bank account is already confirmed in your personal name, it will remain confirmed in your current name even if you upgrade your account to a business account. I will advise that when a bank account has been confirmed on the PayPal system, it isn't possible for us to edit or change any aspect of the direct debit agreement in place between your bank and PayPal accounts. Due to this, it should not effect your bank account in any way by upgrading to a business account.
I hope this information helps,
David.
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