Does having a MS in Mfg sys. engg. help in the app. process?

I am sure that a similar topic might have already be discussed on this forum in the past. But I am new here and this is my first post. I did my masters degree in Manufacturing Systems Engg., a multi-disciplinary course between manufacturing engineering, industrial engineering and operations management. I have a 3.7 GPA in my masters and good undergrad academics as well. I was a research assistant and a teaching assistant with my professor during my grad school tenure. (in addition to this I have a 4 and a half years full time experience in the Manufacturing / quality and process improvement fields, and one year experience as a student consultant for 2 mid-western companies through my university). I am planning to apply for an MBA in Operations.

Firstly, I was wondering as to how will my masters degree be counted in my overall job packet.
And secondly, which transcripts would I have to supply in my B school application. Grad school or Undergrad or both?

I would appreciate if anyone could help me with these questions.

Thanks in Advance!