IS Broker package 4.6 v.s. ES 4.1.1

Has anyone did this successfully?

We have no problem connection B2B 4.0.1 to ES 4.1.1 using B2B-ES Bridge 2.0, but it seems that I can not use the new version of B2B (IS 4.6) with new Bridge (Broker Package 4.6) to connect to ES 4.1.1. (I could use the old Bridge connect to the new ES though.)

I’m wondering if the failure was due to some of the configuration or there is actually a problem with the new IS/Broker Package working with the old ES.

Thanks a lot in advance.