Identity awareness does not work, routing problem. What are the options for solving the problem?

[Andrey_Korobko]

We plan to use authentication on the FW-B for Internet access and Mobile Access connections

Description of the problem

FW-B uses an external IP (2.2.2.2) address for requests (Identity Avareaness) to DC-1. DC-1 sends a response in the wrong direction, according to routing

Is it possible to configure the FW-B so that it sends requests (Identity Avareaness) using its local IP address as the source interface?