Hi Anewbee,
Thanks for posting your concern.
The Bank Register window is designed to streamline the creation of various transaction types in a single interface. As such, it's hard to pinpoint the exact source of the duplicate spend money transaction without more information.
However, rest assured that voiding the spend money transaction will not impact any ledger accounts, and therefore, won't affect your file.
Please feel free to reach out if you need any further assistance.
If my response has answered your inquiry, please click "Accept as Solution" to assist other users find this information.
Thanks,
Genreve