As
@Jessica Spencer asked, I don't know that you can have different connectors for the various Apptio instances.
As far as I know, the Datalink Classic connector will update DEV, and this will trigger a calculation for STG as well.
We use an on-prem agent to get to local data the Apptio-hosted one cannot access.
I am not sure what you're trying to achieve,
@Venkateswara Rao Veerapaneni.
#TBMStudio