What twisted says is that you need to remove account from: Parent account input, this one: Customer > UpdateOK I tried that, I removed the owner from the sub account and then changed the previous owner into a sub account of the new owner. But then they both loose all the account data (campaigns, lists etc) so it doesn't do what they were looking for. So I changed them back. To solve the problem I have told them to manually change the login details on their accounts to manually swap them over
This can use this subaccount when want, i don't see the reason why one customer want to become a subaccount because this will manage only campaigns , lists present on customer account.What my customer wants to do is change the owner of their account to one of their sub accounts.