Dear Abhijit
Here is how you can interpret the status field in 0PRODORDER_ATTR.
1) The setting for status for 0PRODORDER_ATTR is maintained in the configuration.
SBIW > Data Transfer to the SAP Business Information Warehouse >Settings for Application-Specific DataSources (PI) > Cross-Application Components >Status Concept > Maintain BW Status Object for System Status
You can see SYSO , SYS1, SYS2 maintained here. For eg if your BWSYS0 shows 4 then it means the order is Closed.
So in your case SYS0 should be the status field you should be using. Before that request you to test with seperate scenarios and cnfirm
Regards
Gajesh