Hi, is there a way to tell if unity is even trying to use the GI cache. I have numerous scenes that are baked, and when i was changing the filtering settings, the cache was working…I literally reopen the scene and the cache is no longer being accessed, it just tries to rebake the whole thing.
Hi adpok.
My guess is that you are using the progressive lightmapper, witch is indeed not using the gi cache to store intermediary result while baking, thus the rebake when reopening the scene and changing filtering.
This is however definitively something that we want to support. The sad story is that development of this was started but priority shifted and this code is waiting for more love at the moment. If this feature is something important for your workflow i would advice to open a public bug on this and up vote it 
Florent
Hi @adpok
We created a bug report for this case to track it and soon, a public link will be available so you can vote if you want: Unity Issue Tracker - [PLM] Converged lightmap results are not cached
Thanks
cheers