Premiere has no way of automatically removing disabled clips so this is a round-trip XML workflow to get rid of them. Currently, it does the opposite. It removes everything but the disabled clips. This way, you can paste the disabled clips back over your hero sequence and then delete. It's a little hacky for now and hopefully I can find a way to migrate this over to Extendscript to keep it all simple. But for now, this is what it is.