3829206 - Why is the agent sign different when creating a reservation via Concur?

The client has asked why the agent sign in Galileo/Apollo has been changed from OT to UT and if this change is connected with the move to Travelport HAP Credentials. 
The agent sign is displayed in the itinerary history on CRDT line.

INTERNAL ONLY: The client has asked why the agent sine is different now when reservation/PNR is created via Concur. The client asks if this change is connected with the move to Travelport HAP Credentials. , KBA , CON-SRV-TRV-ADM-LAN , View Airlines , CON-CA , Cross Applications , CON-MOB-TRV-HTL , Hotel , CON-CA-TLS-IEM-IMP , Import Credit Cards , CON-SRV-TRV-APO , TWS Test (Apollo & Gal) , CON-SRV-TRV-RAL , Rail , Problem