Color Engine Pilot, the predecessor of Color Pilot, does not enable older versions (During an upgrade, the license for the older version is replaced by the license for the newer version. So existing customers cannot start up older versions after an upgrade.)
DeskPack for Illustrator®
Enables older versions (as of version 14)(Automation Engine connection limitations as of version 20)
With Suite 14 we introduced bundled licenses (DeskPack Essentials, DeskPack Advanced) next to licenses for individual plug-ins, those bundled licenses do not enable older versions.
Version 20 licenses remain backwards compatible but Automation Engine connection will only work for version 20, not for older versions. More info here: