TXT record returns two values - doesn't seem that should be possible

[bbct]

My renewal was failing, the value returned for my TXT record didn't match. I used nslookup to see what the value is. Somehow I've managed to get 2 values stored for the same TXT record:

Non-authoritative answer: 90103513-A497-46F6-944e-32CDf9D25794.My.domain.COM text =

    "SqTGI30-hNDOzuDCCARZx8_ca8dbhCCJ45emjGEQTec"

90103513-A497-46F6-944e-32CDf9D25794.My.domain.COM text =

    "M4Js9Ps56wQZn5v6_j45LQLk4ZquUjfxsXiKfRx6gBI"

The second one is the correct one, the first one must be older? Should two TXT records even exist like this? Question 1: any idea how I managed to do this? Question 2: how do I delete the TXT records to start from scratch?

Disclosure - As I am testing this out first, I may have registered this same domain a second time under different credentials, perhaps that is why it is returning two values?.

Perhaps I should just start with a fresh db, and start over? I've registered only a couple domains. If I need to start over, what's the best way?

Thank you for any help you can provide.