Here is my scenario.
I currently have 3 registered domain names.
1 has dns hosted by the registrar
1 has dns hosted by someone other than registrar (ISP)
1 has dns hosted by 3rd party other than registrar
I am working on putting them all under the same registrar and have that regristrar host the dns so I can
control my dns settings. My question is once I move the dns servers to the registrar will anyone be able to resolve
the domain name during the move or will the old SOA continue to resolve until I have them remove our records.