Has anyone breastfed while on suboxone, with a preemie and had problems with the baby withdrawling?

I was around 20 weeks pregnant when I started suboxone maintenance to help with my addiction to oxycontin. I had no issues during pregnancy, my baby was perfectly healthy.
However, I delivered a preterm baby girl at 35 weeks and 3 days. I'm not sure if the suboxone had anything to do with the preterm labor.
Around 2 days after my 4 lb 12 oz daughter's birth, she started to have withdrawal symptoms. The physicians caring for her refer to it as NAS, or Neonatal Abstinence Syndrome.
There is a scoring sheet for her symptoms, and depending on her scores, (the lower the better, like golf) they will treat her with methadone.
Because her scores were so high, they began treatment on methadone. Her heart rate dropped severely, so they stopped the methadone, and started her on phenobarbital, which is an anti-seizure medicine, to help with her symptoms.
For around 5-6 days, the phenobarbital was working splendidly, and we were told our daughter would finally be coming home from the NICU in 2 or 3 days.
I wanted to breast feed, so after asking several physicians and pharmacists, I attempted to do so. Around a half an hour after my breast milk was introduced, her NAS scores spiked and they put her back on methadone. In fact, an even higher dose than before.
I was wondering if anyone else has had similar experience? Also, I am open for questions if you may be in this situation, or one like it.
Any information will help. Thank you...

: http://alcoholdrugstreatment.info/has-anyone-breastfed-while-on-suboxone-with-a-preemie-and-had-problems-with-the-baby-withdrawling