Pantones not showing up in illustrator swatch books

I just tested my own theory (that book names might not be file names) but that's not correct. I renamed a swatch name in the Presets folder and it immediately reflected in the swatch menu. So you must have a wrong folder ! As a matter of fact, my books/swatches appear as files in this folder (on a Mac) in Applications > Adobe Illustrator 2020 > Presets > en_GB > Swatches. And not in a folder called "Color Books"...

Hi,

Is there only one version of Illustrator installed?
Are multiple versions installed? Is PANTONE installed on all versions?
I am using Illustrator 24.1 with macOS Catalina, but this is not a problem.

Or will it appear if you navigate to your user's presets folder?

/Users/ User Name/Library/Application Support/Adobe/Adobe Illustrator 24/en_US/Swatches

You might need to reach out to Pontone about this at https://www.pantone.com.

Also,have you seen Pantone Connect?  https://www.pantone.com/products/digital-apps/pantone-connect-for-adobe-creative-cloud

Since these seem te be versions of already existing ones, the file name might not be the sole indication. If they're using the same internal referral name for the menu, they might be conflicting on that level...