What affects does the drug subutex have on a newborn who's mother was using during pregnancy?

Subutex: Subutex is a medication used generally for opioid withdrawal, though occasionally for other. Pregnancy we generally consider it a medication must balance risks and benefits. Like infants of mothers who use opioid medication, newborns can experience symptoms (fever, irritability, diarrhea, nasal congestion) though some believe less. Likely less risks than heroin, used less freq than methadone.