You can easily delete downloaded transactions that do not belong in your company file.
For example, if you're using your checking account for both business and non-business purposes, and you do not want your downloaded non-business transactions to match to your QuickBooks entries, delete your non-business transactions after you download.
To do this task
Open the Add Transactions to QuickBooks window.
Click Select Items to Delete.
Select the transactions you want to delete:
Click Select individual transactions, and then click transactions in the list.
Click Select all downloaded transactions older than, then click the date drop-down arrow, and then select a date.
Click Delete Selected.
Unmatch a transaction