Quickbooks Online Defaulted My Settings This Morning

We value your time and effort in trying to perform the troubleshooting steps to get this fixed, @prollc1.

Any data, including the assigned Income account, shouldn't be changed without someone doing it. Thus, we can utilize the Audit log feature to review if other users in your account have accidentally deleted them.

If you haven't tried it, please sign in as an admin to access the audit log. Here's how you could do it:

1. Go to the Gear icon and select Audit Log.
   
2. Use the fields on the Filter panel to choose the appropriate User, Date, or Events filter to narrow the results.
3. Hit  Apply.
   

If you found nothing from the Audit log feature, please give us a call. This way, they will conduct a thorough investigation as the initial troubleshooting steps did not resolve the issue.

Within your QBO account, go to Help in the upper-right corner. In the Search tab, click Contact us.

Additionally, please refer to this article to view different details on how importing data works in QuickBooks Online: Common questions about importing data to QuickBooks Online.
 

Know that you can always post in the Community if you have other questions. I always want to make sure you can view your data in the system. Bye for now and take care always.

On Jan 18th I touched this account because the import feature from QuickBooks Desktop to QuickBooks online did, again, not maintain tax mapping. I did this in the Accountant View, which I prefer. The Accountant View does not expose the Billable Expense Income Account Mapping configuration, you need to switch off Accountant View to see that (that's what took so long this morning to find). 

So updating the Tax Mapping in Accountant View, caused the the account to Uncheck Billable expenses and remove the assigned account.