Sequence of magnetic flux (Φ_P, Equation (4)) contours in the accretion flow, with green and red indicating opposite polarity. Black solid (dashed) lines are Φ_P = 1 (−1) contours (in code units). Here, we highlight a polarity inversion event, where at t = 8750 r_g/c, the BH is saturated with positive flux, and at larger radii  ≈200–2000 r_g, there is a larger region of negative flux. By t = 68750 r_g/c, the negative flux has reached the event horizon, and is ejecting the positive flux. By t = 73,750 and 88,750 r_g/c, the negative flux has completely saturated the disk out to ≈300 and 400 r_g, respectively. We also show the density scale height ((H/r)_ρ, Equation (8)) above and below the midplane in white.