During an upgrade parmlibs can be transferred and use in the new version. Where can you find the actual active definitions?
You can either run a console command for Vtape (display parmlib log) or SVTS D P,L
This will show you what parmlibs are being loaded up. Copy/paste these parameters.
Or check during startup of Vtape and it will show you the same information.
Display Parmlib command