Unclearing Many Transactions

In Cash Management, I know how to unclear transactions that have been cleared.  However, is there a way to select and Unclear a large number of transactions similar to how you can click "Find and Mark" in the Clear Transactions form? 

We have cleared over 1000 payments and have used the incorrect Clear Date.  We need to Unclear these payments and do the clearing again with a different date.  Since we have over 1000 payments to clear, is there a better way to select all of the payments without having to manually check each payment in the Clear Transactions form?

This seems like it should be standard functionality, but I do not see it.