Description of problem: This button wasn't merged so the Advanced search pages needs to have the widgets updated to work. Should be updated when classification/product/component/sub-compnent is update. Can be done either by ajax or from a javascript variable.
*** Bug 1221431 has been marked as a duplicate of this bug. ***
Verified this issue. Version 5.0.2.rh2 The Refresh button was removed. And the versions/release/milestones will be updated dynamically.