They got over the disliking it part since it had become quite the fan favourite and was one of their most frequently requested songs and wanted to treat their fans to a couple rarities for their final tour. Also as only CoS song in the show (they played at least one song from every album in reverse chronological order, so picking things for nostalgia reasons was likely a factor too) it’s far easier for Geddy to sing than bastille day which likely helped their choice.