Hi, you can exclude and delete the downloaded transactions. 

1. From banking screen select the relevant bank, then select for review tab
2. Tick the transactions you want to exclude, then select Batch actions and then Exclude selected 
3. Select the Excluded tab   
4. Tick the transactions you want to Delete 
5. Select Batch action 
6. Select delete 
7. A message will pop up asking Are you sure? These transactions will not be recoverable 
8. Select Yes.

Comment back if you need more details.