Repro:
# Open deringing_repro project
# Open scene "scene with some probes" 
# Select "probes"
# Toggle off "remove ringing" on the LightProbeGroup component in the inspector
# Save scene
# Load scene "other empty scene"
# Reload scene "scene with some probes" 
# Notice that the flag was not turned off

Expected: Scene is dirtied and the flag is serialized

Actual: The flag is not saved

Workaround: Change to debug inspector and toggle the underlying serialized value.