Complex sentence: Bate subsequently bought out Bentley and his other partners to take the Ottawa edition of "Frank" independent of its Halifax roots, although both magazines maintained very similar coverage and continued much as before.
Split into simpler sentences: Bate subsequently bought out Bentley and his other partners to take the Ottawa edition of "Frank" independent. After Michael Bate bought out Bentley and the other partners in the Ottawa edition, the Ottawa edition continued much as before.