Testing XSL-FO Document Templates with PDF Output

 I'm testing modifications to our Blanket PO Release template and our normal Purchase Order templates in our testing instance.  What I'm running into is I can make changes to the template, preview and see the change, but when I go to pull up a test purchase order or release, I'm presented with the same file that was output previously.
I cleared my browser cache to make sure it is not being pulled from there as well.  Do I need to delete or clear a cache somewhere?  Bounce the Output Post Processor?  Or am I missing something?
Any help would be greatly appreciated!