Brive climbed above Worcester Warriors to qualify for the European Challenge Cup quarter-finals with a 33-7 win, but only after the match had been postponed and then moved to an alternative venue.
Sam Skinner and Matt Fagerson have been added to Scotland's Six Nations squad for the rest of the tournament.
Clermont Auvergne held off a Harlequins fightback to triumph 32-27 and set up an all-French final against La Rochelle in the European Challenge Cup.
La Rochelle booked its place in the European Challenge Cup final for the first time thanks to a tightly contested 24-20 win over Sale Sharks.
Harlequins edged out Worcester Warriors 18-16 in a tense European Challenge Cup quarter-final clash at Sixways Stadium.
Chris Ashton marked his competitive Sale Sharks debut with a sensational hat-trick in a 34-13 beating of Connacht in the European Challenge Cup.
Tom Howe scored a first-half double as Worcester Warriors pulled off a shock 38-27 European Challenge Cup bonus-point win at Stade Francais and 12-try La Rochelle humiliated Enisei.