Symptom:
Under Tasks, Export initiated for <domain.com> never completes
Steps to Test:
1. Login at https://portal.ultradns.com
2. Click Domains
3. Click <domain.com.>
4. Scroll down to TXT (Text) section and confirm that there are records that have an empty Comments section
Root Cause:
TXT records with empty Comments block domain from exporting
Steps to Resolution:
1. Login at https://portal.ultradns.com
2. Click Domains
3. Click <domain.com.>
4. Scroll down to TXT section and confirm that there are records that have an empty Comments section
5. Either delete the TXT records with empty Comments section or add appropriate comments
Additional Information:
Insight in Steps To Resolution, Step 5
TXT records without comments have no value.
They can be deleted without impact.
That said, empty TXT records are probably evidence of a misconfiguration, and it's worth you investigating if you've accidentally deleted or need some of the common TXT records that are used such as an SPF record (entered as a TXT) for a domain that you send email from.