Natively editing Panasonic LX7 MTS footages in Avid MC 5.5/6

I have recorded many 1080P video when I travel via Panasonic LX7 camera, the recordings are in .MTS video format, now I would like to import these projects to Avid media composer 5.5 for editing. What I want is to edit MTS files natively in AMC 6 on Macbook, but I always encounter importing problems, can you recommend some software which can help me import and convert LX7 MTS to Avid MC natively?