My credit card number has change during the year, and when I set up my new car to import transactions, it re-imported many from the old card. how to clean this mess?

Hey there, traductionslaurentiennes. 

It's great to have you join us here in the QuickBooks Community! I'd be happy to help. 

QuickBooks provides the option to exclude bank transactions when you need to. Here's how:

1. Navigate to the 'Transaction' tab then 'Bank transactions'.
2. Click on the 'For Review' tab.
3. Select the checkbox of the transactions to exclude.
4. Hit 'Exclude'.

Feel free to reach back out if you have any other questions.