From the documentation and experience it looks like if you run PMRP per Activity, it will do no netting at all.
But what, if any, will be the difference between running “Perform PMRP per Project PNG” for the whole site and running “Perform Project MRP per Planned Netting Group” also for the whole site if we only have project PNGs?
Why are these two jobs needed anyway? To the untrained eye it would seem that “Perform Project MRP per Planned Netting Group” would do the job in both cases (both when you have project PNGs and PNGs over project boundaries).