We discussed with Adrien and not sure if this is an intended behaviour so making a report to track and clarify. When subdivision level is changed, some probes dont change position (which is expected) but for some reason the value of captured light changes.

Repro:
1) Open spotlight tunnel project apv branch https://github.com/iM0ve/Spotlight-HDRP/tree/APV
2) Load main scene, then add Day
3) Bake lighting.
4) Switch to the first camera
5) Take a screenshot of the probes
6) Reduce the APV simplification levels from 27m to 9m
7) Bake
8) Take screenshot
9) Compare the results

Expected: The probes that did not move, should not change visually because they receive the same amount of light as before.
Actual: The probes that did not move get brighter/darker, sometimes light angle changes.

Note: In the screenshots red brick outlines are missing for a portion of probes, im not sure whats this about but its not the core problem of this fogbuz.
Tested on apv-staging2