Thank you for taking the time to visit the Community to post your issue, although I apologize that you haven't received a response.
I would next recommend running the Validate & Repair tool on the data file from the File menu > File Operations > Validate & Repair option.
In the Validate File window that opens, click the top box to "validate file" and then click OK.
When the validation completes, a data log will open in Notepad, please let us know if any errors or issues are found/repaired, and when ready close and re-open Quicken.
If the trouble persists after completing the file validation, you may need to move forward using the newly created loan account.
Please let us know how it goes!
Quicken Care has the ability to initiate a screen share to view the issue in real-time to help isolate what is causing this.