Is there a way to use a custom initial state for a SOP-level RBD Bullet Solver simulation? My goal is to have a pile of broken concrete on a ground plane that can interact with an animated character. So presumably I'd let the RBD sim settle, and use a settled frame for the initial state. Seems intuitive enough, and I've found tutorials/info that shows how to do this with a traditional DOP network sim, but nothing on whether this can be done with the Bullet Solver SOP. Many thanks for any help!

Here's an example of setting up an initial state for RBDs using the RBD Bullet Solver SOP.
Note, in this example I am freezing the settled simulation and setting it to be "sleeping" so the pieces get actived on impact with the collider. I am not transferring the v and w attributes from the initial simulation onto the proxy geometry, while you may (or not) want to do that will depend on whether you do want some of the motion from the settling simulation to come through.

Thanks! Much appreciated!