Protexis/Arvato? Which to remove, or are both used? (legit question)


Through the time I have installed a number of versions, and then upgraded those, I have  also installed other Corel produccts to run the trial to try them out. I think I have installed at least 6 different products and versions that way.

Now I want to clean it all out (or at very least disable the service) and stick to only CDR2018.

In the Services I see two programs related to the licensing protection. Protexis licensing and Corel Iicensing validation V2. (both by Arvato).

Which do Corel2018 use? So I can safely remove the other? Or do 2018 use both?