What does NPVR remove when naming recordings

[p37307]

Does NPVR remove certain punctuation marks of the Schedules Direct assigned names of show recorded?

If so, what punctuation marks is invalid and removed.

I've noticed some items since November is being duplicated. All have ' in their name.

For example Bob's Burger.S01E01.Pilot.ts is recording as Bobs Burger.S01E01.Pilot.ts

I have looked around, esp in the voluminous developer section and can't pin the answer down.

The only thing I know for certain is I had MCEBuddy setup to rename.

Finally, if I use an import utility, after using a renaming tool, will NPVR ignore the imported items or will NPVR just recognize the once recorded item is back?

Thanks folks.