[SR-Users] ACK Not Relayed to MS Teams

[me.projects at yahoo.com]

Hi,
I am integrating PBX with Teams via Kamailio
Call is working but ACK delivery has an issue 

This is the ACK Kamailio receives from PBX
I process the ACK with 
handle_ruri_alias();

and 
record_route_preset(AS per GUIDE LINES)

But this change is not reflected in RELAY 

ACK from PBX 
ACK sip:api-du-b-usea.pstnhub.microsoft.com:443;x-i=0c344c6a-cd75-4095-9891-bf9445c28b82;x-c=5691aa770226562db7d3e16ab090e196/s/1/e857255ef2344e03bd1d12e270ef5e6c;ias=52.114.132.46~5061~3 SIP/2.0                                                                                                                                   Via: SIP/2.0/UDP PBX_IP:7790;rport;branch=z9hG4bKPjc50440d0-77db-4467-94cb-2f93c4f88538                                                                    From: "USER" <sip:13300 at PBX_IP>;tag=ab87b9b5-eee3-420c-8472-2eec82a769ac                                                                                   To: <sip:1508 at KAMAILIO_IP>;tag=a2ce378b106949cf8bac8f978bb573fb                                                                                                  Call-ID: 3dbc6680-fec3-4ba5-8232-6dda8c669bca                                                                                                                      CSeq: 23811 ACK                                                                                                                                                    Route: <sip:KAMAILIO_IP:7790;lr;ftag=ab87b9b5-eee3-420c-8472-2eec82a769ac>                                                                                       Route: <sip:sbc.KAMAILIO_FQDN.com;transport=tls;lr;ftag=ab87b9b5-eee3-420c-8472-2eec82a769ac>                                                                         Route: <sip:sip-du-a-us.pstnhub.microsoft.com:5061;transport=tls;lr>                                                                                               Max-Forwards: 70                                                                                                                                                   User-Agent: Asterisk                                                                                                                                               Content-Length:  0                                                                                                                                                 X-Siptrace-Fromip: udp:PBX_IP:7790                                                                                                                         X-Siptrace-Toip: udp:KAMAILIO_IP:7790                                                                                                                            X-Siptrace-Time: 1606135546 516717                                                                                                                                 X-Siptrace-Method: ACK                                                                                                                                             X-Siptrace-Dir: in

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