I have a scene where I have made a raffle drum with tickets spinning around inside.. I have a ticket I have made, with a cloner on it. I have multiple sets of these in my scene. Each is a rigid body, and my drum is the collider object.
I have baked animation for each set of tickets, and even saved various incremental saves. When I closed my scene all the baked data was lost, even the incremental saves that were fine this morning. Yet a previous version of the same scene, just from about a week ago data remains.