DNS Zone already exists - error when trying to create new domain
We have an issue where we receive the following error when trying to create a website domain:
Error : 70701250 : DNS Zone already exists.
Some background on this issue; we originally created a Mail Only domain for a domain, example.com and recently switched the plan from a Mail Only to a Both Web & Mail plan where the user is able to create a domain name, but when the user tries to create their website domain, the above error is generated and no website domain is created. We have tried to purge the old DNS entry in the DNS server and manually deleted the DNS entry in the HC SQL database entry but the error is still being generated. We have tried to search for this issue in both these forums and KB articles but have had no success ...
Does anyone have any further ideas or suggestions?