Same here. Checked it out on the UEFA site and it's as you suggest. This is what the UEFA article on the competition's regulations says: "The UEFA administration shall seed clubs for the quarter-final and semi-final draws on the basis of the clubs’ sporting results in the group and first knockout stage (eight matches). The performance table is compiled in accordance with the points calculation system used for the club coefficients (i.e. two points for a win, one point for a draw, no points for a defeat). If two or more clubs are equal on points, the accumulated coefficients of each club in question and its respective association over the previous five seasons will be used to determine the rankings (see 8.02). The four highest ranked clubs will be seeded and will be assigned a fixed position from 1 to 4 according to their ranking. These four clubs will be drawn against the unseeded quarter-finalists in accordance with the principles set by the Club Competitions Committee."