Working with Manhattan GMAT 5th Ed & OG 2020

Hi there! I started studying for the GMAT around 2 weeks ago. My main resources are the 5th ed. of the Manhattan GMAT books and the 2020 OG, however, the 5th ed. of the Manhattan books reference a different edition of the OG (in terms of which problems in the OG correspond to the chapters in the Man...