Does anyone know how to clear the list of step record patterns?

In the step pattern recording field (step record box)  there is a drop down list of all the step record patterns I've created. Strangely, I have over the limit of ten. I would like to clear this list and start fresh. I've looked for ini files that might contain the list. And I've tried deleting them within Sonar 8.5.3.
 
Any ideas and suggestions would be appreciated. Thanks!