This option allows you to remove all unexplained transactions on an imported statement. To do this you will need to specify a date range - all unexplained transactions that have payment dates outside of this specified range will be removed.  

Step 1.

Navigate to Money > Bank accounts.

Step 2.

Click on the Explain link beside the imported bank account that you would like to narrow the results of.

Step 3.

Click on the [Bulk delete unexplained transactions] link at the top of the statement.

Step 4.

Select a minimum and maximum date - any unexplained transactions outside of this date range will be deleted. 

No explained transactions are removed.

Click on the Delete transactions button to process.