How to force SBC to add Route into forwarded request?

Hello,

How can I add Route header into INVITE request when forward it from orig.SA to dest.SA? I believe there must be some option or parameter on sip-interface or sip-config responsible for this. In my case SBC receives INVITE from the orig. SA without any Route headers. A local-policy is configured and dest. SA is set as a next-hop. So SBC just replaces the RURI with the hostname of dest. SA and forwards INVITE to him. dest. SA cannot work without Route instructions so they expect me to include it on SBC.

Loose-routing is enabled on dest.SA.