Evolution of the orbital eccentricity between the two MBHs for the two merging disc galaxies setup without (left panel) and with (right panel) MBH accretion and feedback at 100 pc resolution. The dashed lines illustrate the evolution in RAMSES above the resolution limit. The change from dashed lines to dots indicates when the MBHB evolution is handed over to RAMCOAL at the boundary of the resolution sphere.