1.    Click Queries
2.    Select a category that you want to store this query in
3.    Select New Query under the tasks menu
4.    Name the query – Lost Transaction
5.    Set the Starting criteria to Base/All Constituents
6.    Set the Data Return Type to Journal Entry
7.    Under MATCH select All
8.    Select Commonly Used Fields from the Available Fields drop down menu and click on Journal Entry Date
9.    Fill in the date of the transaction
10.    Select Commonly Used Fields from the Available Fields drop down menu and click on Individual Transaction Received
11.    Select Equal To from the drop-down
12.    Fill in the amount of the donation
13.    Click Save and Preview

While you are looking at the preview screen, you can click on the individual transactions. Once the transaction is open, you can verify the name on the credit card on the Name on Card field. Once you find the corresponding donor name you have found your transaction. View here to learn more about moving a transaction to another account if needed.