They are simply removing the name "Bioamber" from the marketplace, as much as they can. There is no way they will want to use "Bioamber" in Canada while there is still a Bioamber in the U.S.
Since some of the patents are remaining with Bioamber Inc in the U.S., I'm assuming there is a licensing deal, OR existing perpetual licenses with Cargill and Davy are being SUB-licensed to the new company rather than the new company needing to make new agreements for yeast and manufacturing process rights. The U.S. Bioamber company may just be a licensing shell for the rest of it's life.
Regardless, the new Canadian producers will very likely begin using their own brand identity after this complicated shell game is completed.