Hi @PAULEM Thanks for putting this in!
We looked up the ATO community, and it looks like ATO has set up top-level categories: tax, super, tax professionals. (See: Create and set up top-level categories ) When you visit a page under any category out of tax, super, or tax professionals, and then run a search, your search will show results only from that category.
And this is what is happening: once you click on a search result, it is under 1 of the top-level categories. Now if you click on 'back' button to go to the search page, or even if you fo a fresh search, your results will show up only from the same top-level category.
You have also enabled the setting "Set the community page as the top level when users visit it" under Admin. Due to this your search from the ATO community home page, is searching across the community and hence you see results from all 3 categories.
Hope this helps : )
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