SBC Use Contact header info instead of Record-Route

Hello Guys,

I'm running into an issue where I need to have the SBC respond to SIP messages to the Contact header ip address instead of the Record-Route, I'm not seeing any option on where I can prioritize this option.  We have two SIP servers that run primary/backup, calls to the primary SIP server route properly since the Record-Route Host name matches the Contact Header.  Once the backup server becomes primary, the Contact header updates but not the Record-Route info (it still uses the same hostname as the primary SIP server host.  I need to have the SBC respond to 200 OK