Sticking with Premiere Pro Help
After checking This Help System Only and running a search, you would get a page showing your search results. That much you expected. What you didn't expect was that if you ran a second search from the search results page, you would not get results only from "this Help system." Rather, you would get results from a broad search of community content.
At least this was the case until a few minutes ago. Because most of you, most of the time, wanted to stick with "this Help system" unless you intentionally chose community search, sticking has become the new default after you check This Help System Only . Now, after checking the box and running a search, your next searches, from the search results page, will filter out all results not from "this Help system," i.e. not from Using Adobe Premiere Pro CS4.
What if you want to switch to searching all of Adobe.com content, or all of community Help? You have those options too, depending on whether you uncheck the box Show Only Content From Adobe, or leave it checked.
Clear your browser cache, and check it out: Using Adobe Premiere Pro CS4.