Roadmaps can be deleted both individually, and in Bulk should the need arise.
In Sisu, open a transaction.
In the menu on the left, click Client Portal.
Click the Associated Road to Close Template(s) drop-down, and deselect any templates you want to remove from the transaction.
From within the Client Portal:
Click Roadmap Builder>Transaction Screen
Click the checkbox next to ID to select all, then click 'Remove' in the upper right.
You may have to do this a few times depending on number of transactions, or you may expand the number of records per page on the bottom selection to 100 to speed things up.