wait so you are trying to play back a cached sim… and then trying to use sleep / kill fields I suppose to stop sections of it from playing back? It makes sense that the sleep fields work when you are playing it back un-cached. When you capture and cache the sim its going to play back the cache as you captured it. It does not make sense to try and use sleep fields on the cached playback. Those fragments are not live at that point so they will ignore the sleep fields. But you can re-activate them so that they are live again. Then you can use sleep fields on the live fragments.