Hi there, lmoore2.

Allow me to chime in and share some information on how you can view all expenses with attachments in QuickBooks Online (QBO).

Here's how:

1. From the left menu, hit Expenses > Expenses.
2. Tap Filter drop-down and choose Expense from the Type drop-down menu.
3. Select the Status, Date, Payee, and Category.
4. Hit Apply.
    

Here's a sample screenshot for a visual reference:
 

You can also go to the Gear > Attachments to see what transactions are linked to that attachment. Please see this sample screenshot: 

To learn more about attachments, you can read this article: Attachments in QuickBooks Online.

You might also want to visit our Reports and accounting page to learn some best practices for managing reports in QBO.

Don't hesitate to leave a comment below if you have other questions about the list attachment. I'll be around to help.