This is how you add a receipt to an expense with a transaction already attached.
1. Step 1
Go to the Expense Manager and highlight the report. The expenses are in the lower half of the screen. Highlight the expense line with the green square indicating the transaction is attached. Click Verify Match on the left side menu bar. A pop-up window displaying the transaction and receipt will open. If they match, click Verify Match. There is a percentage match. This can vary if the dates do not match. Sometimes, the date incurred is different from the posted date. The name might be slightly different on the receipt.
2. Step 2
The receipt is now attached to the expense.