Deploy Process model from IS to IS which share same PRT

Hi,
I have process model deployed to an IS, the Model is working fine. Now I want to deploy it another IS which share same prt as the current one.
It is not possible to do it directly through designer.
can this be achieved by just moving the generated IS package? or Do I need to make any other changes?

Thanks
Sarat

Hi All,
I got the answer in documentation. we need to deply the IS package and restart server. or reload wmprt package.