I have just recently wrapped up an integration with Auth.net to our website and erp system using CIM and the Payment Transaction API. Our system is passing the Level 3 data to Auth.net, but Auth.net doesn't pass this information to the processor. I was curious about the decision for Auth to hold onto the data and not deliver it to the processors and if this feature is on the roadmap? I would love to have the L3 data passed around, we could realize an incredible amount of savings from this (fees can be cut by up to half with this information, That's huge!).
If this isn't on the roadmap, please consider adding support for this.