Well, looks like I'm only who is interested of this feature. Let's hope there is somebody more. What I find out so far. This system is designed pretty bad. I'm talking about this case when You need to use ASM and product combinations. You just can't. You can't have stock quantity for combinations. You can have only products quantity. The problem is that this ASM adds all combination to related product ID, but combinations share all one ID. I have no idea how to improve this. One solution is to redesign this ASM system. Maybe it is possible to redesign combinations system so that you can put together different products, which have all its own ID. Third possibility is also. I completely didn't understand ASM. In further, this previous designer has something like zero knowledge about price, about FIFO, about weighted average. And thanks to this all the statistic based on prices is also wrong.