Burton Albion beat Mark Wright's League Two side Peterborough United 1-0 thanks to a Shaun Harrad goal midway through the second half. They now go to entertain Burscough.
On Tuesday, Woking booked their place in FA Cup Round 2 to face Northwich, one of three all non-league ties, by edging past fellow Conference side Southport 1-0 thanks to an extra-time Craig McAllister goal in a game that had nine bookings. Halifax lost at Rushden on penalties after three and a half hours of football failed to break the deadlock.
Seven Conference sides - Hereford, Grays, Aldershot, Tamworth, Woking, Burton, and Stevenage, all now remain in the competition along with five other non-league sides.