Hi John,
I deleted a domain on Build 6925 and wasn't able to replicate that error. Could you please update to see if it resolves the issue?
If it doesn't, your license has active Maintenance and Support which allows you to receive free, unlimited technical support for issues like this. I went ahead and started a support ticket to address this issue. You should receive the Support Department autoresponder shortly. You can reply via email and access your ticket online by logging in here:
https://www.smartertools.com/account/#/support. If you could, please also submit a Remote Server Access Agreement that will allow the support agent to take a look at what you're seeing.
Thank you,
Andrea Free
SmarterTools Inc.
877-357-6278
www.smartertools.com