Hi,
Releasing the process order means allowing to proceed further for production.
In normal scenario, as production is not completed yet because confirmation and final goods receipts not done hence manufacturing date is not fixed as well as expiry date also.
If your finish good is batch managed then in this case until you do final goods receipt, batch not created hence MFD and Expiry date not triggered.
So, in normal scenario MFG & Expiry date does not reflect in the process order when its in release status.
But if you are using automatic batch determination then it is possible to reflect MFD and Expiry date for batch in process order release status.
You can go through below SCN discussions to verify the same,
Production order released (CO02)
Batch for production order when released
Automatic Batch Determination in Production order
Regards,
Narresh