According to the post, Karel Kolmann, previously Lead Gameplay Designer at Warhorse, is now a Senior Quest Designer at CDPR.

It says Zdeněk Glatz moved from Lead Level Designer to Senior Open World Designer, and Zbyněk Zelinka from Lead Technical Designer to Senior Gameplay Designer.

Pirat_Nation says the three moves happened in less than a year and that all three held leadership positions at Warhorse before the switch.

The post does not say which CDPR project they are working on, and the material cited contains no confirmation from either studio. The claim is unverified beyond the single post, and neither studio has commented in the material cited.