I can help you find old invoices, bynack23. Thus, you can review past transactions quickly.
QuickBooks Online (QBO) recently updated options and filter buttons for up to 2 years backward, limiting your ability to search older invoices. However, we can run the Transaction List by Customer report. Then, customize the date to show your old transactions.
Here's how:
Go to the Reports menu.
In the search bar, type Transaction List by Customer.
Click the Report period drop-down arrow, then choose All Dates or Custom.
Enter the date of the transactions you want to run.
Hit the Customize button.
Select the Filter drop-down arrow.
Put a checkmark beside Transaction Type, then choose Invoice from the drop-down arrow.