You can turn off the Pre-fill forms with previously entered content feature, joryvc. This will stop the system from automatically populating the categories when recording expenses in QBO.

I'll outline the steps to turn it off. Here’s what you need to do:

1. Go to the Gear or Settings icon, then select Account and settings.
2. Proceed to the Advanced tab, then go to the Automation section.
3. Click the Pencil icon, then turn off the Pre-fill forms with previously entered content function by dragging the bar beside to the left.
4. Click Save, then choose Done to save the changes.

You can also read more details about this feature: Use auto-recall to pre-fill transactions in QuickBooks Online.

For additional insights into expense management in QuickBooks Online, I've compiled these resources for you:

• Remove a billable expense charge in QuickBooks Online
• Run and save a monthly expense report by vendor in QuickBooks Online

Please feel free to reach out if you have any follow-up questions or need further assistance. Whether it's about working with your vendors, generating expense-related reports, or any other tasks in QBO.