Software Update will not recognize an already installed update.

I heard Apple released HP Printer Software Update version 2.7 so I decided to go download it.

When I clicked Software Update, it said I had no new software to install. So I plugged in my printer (HP Deskjet 3050 - J610a) and checked again and HP Printer Software Update was listed to download. So I clicked Install 1 Item and it successfully downloaded it and installed it. It then shows this screen:

But then if I go check for updates again, it will list HP Printer Software Update again as if I never installed it.

And if I go to check my software update history in System Preferences, it lists that I have installed it; in fact, I've installed it 6 times.

Anyone else experiencing this or know any solutions?

Thanks!