How to reproduce:
- create an IC8 project
- add a Point Light
- change some of its parameters
- turn ON Volumetric Light and Unlink Light Intensity
- modify the Intensity parameter from default 2.0 to any other value
- apply "Remove object animation"
- all light's parameters are properly kept, with the exception of Intensity, which resets to its default value 2.0

Workaround
- copy the keyframe before applying the "Remove Object Animation" then paste it at frame 0.

Also reported on the forum:
https://forum.reallusion.com/518681/Remove-Object-Animation-does-not-preserve-lights-volumetric-intensity