Republic has taken over all the flying for Midwest Airlines, but the company Midwest Air Group is still alive as a subsidiary of Republic Airways.

from BB...

Our job was simple – could we buy company and operate it at our costs and we’ve done that. We’ve dismantled everything that was Midwest. There is no operating certificate, no unions, no anything. It is a virtual airline providing capacity sourced either through Republic with the E-Jets or Frontier with its A319s.

Pretty good trick. I hope BB can't get away with keeping Midwest Airlines in all forms without honoring the labor contracts with ALPA and AFA.