Original poster here.
Sorry, I didn't want to make my original post too "wordy", consequently I didn't make myself clear.
What I'm really after is to globally select all parts in a project that match certain references, such as containing footprint = "axial0.5", Description = "Res1", and Comment = "10K" parameters, for instance. Then change specific parameters to point to some new library part, and all the selected parts will assume the new parameters. This is basically what "Find Similar Parts" does in AD.
It looks as though you need to "manually" go to and select all the parts of interest, then select SCH Inspector, and you can type in the new desired parameters in the SCH Inspector. Kinda clumsy to have to manually select parts across multiple pages, but I can learn to live with it.
Come to think of it, right-clicking on a part behaves differently than SCH Inspector. Perhaps there is still a way. I don't have Circuit Studio in front of me, but will try later.
Even with the occasional disappointment, I'm liking Circuit Studio a lot, especially for the money!