How can we configure systat01 to update IDOC status in multiple SAP system

Right now we already configure systat01 to update IDOC status 12 to SAP R3 (Partner SAP1) and work fine, but it did not work after we tried the same with another SAP server (Partner SAP2).

We’ve tried to add configure extended setting: watt.sap.systat01.partnerNumber=SAP1
watt.sap.systat01.partnerNumber=SAP2
After save this setting it always deleted the old one.

Our System environment: IS v. 6.1, SAP 4.7, SAP Adapter 4.6
Our configuration: watt.sap.systat01.partnerNumber=DEV_WM

Do you have any idea about this? or if you have another way please tell us.

Best Regards,