[How can a tracker be found, removed and be back immediately?]

Thank you so much for the clarification.  I really appreciate the effort made and the very clear explanation.

 

[How can a tracker be found, removed and be back immediately?]

When I run CCleaner Professional Health Check, it seems to run fine.  It comes back and says it feels like a super star and provides the numbers of items removed and always with zero for speed and security.  I rerun the Health Check immediately and it finds 2 trackers to remove, no junk and zero for Speed and Security.  It says it cleans up the 2 trackers.   I repeat the process again and it finds 2 trackers and removes them again.  I repeat the process again and again with the same results.  Whatever causes those two trackers may get removed but they must be installed again between the back-to-back Health Checks.  Is this an error or is something embedded  that re-adds the trackers between the Health Check executions?