Hi Hardy, Sanne says you are redesigning the Faceting engine. The post he just provided you with is something I'm currently using in production. Unfortunately with the API changes in version 5, I'm unable to make the upgrade without breaking all my faceting code. He suggested I provide some feedback while it's being built so that hopefully all use cases are covered. I highly suggest that example. I'd also like to provide you with a live production example where you can play with the faceting. https://www.cardaddy.com/vehicles

In the short-term, do you have any suggestions on how to go about upgrading to 5.1 while still maintaining multi value facet counts?

Thanks