Prefiltered cubemaps not updating in build, tricks and tips needed

Cubemaps and builds
Hi Everyone
We have a build where the non prefilered version of a cubemap is working and updated to the most current version, but the prefiltered version is of a much older version

As far as I know the build that was uploaded last by our programmer was a complete over write this time and not a partial, we thinks that was the reason it didn’t update before.

Is there a way of finding the pre filtered assets in a build to do a comparison to make sure that it’s updated?
Mainly looking for naming convention stuff, I am an artist and not a coder