Luke Moore and John Martin struck late goals to beat Wrexham 3-1 in a quarter-final replay to send holders Ebbsfleet into the FA Trophy semi-final.
Jefferson Louis had given Wrexham the lead with his 17th goal of the season when he capitalised on Sacha Opinel's weak back-header just after half-time.
But Giuseppe Sole levelled immediately for Ebbsfleet before Moore had a 60th minute penalty saved by Gavin Ward.
Moore's 75th minute shot, though, did beat Ward and Martin secured the win.
Ebbsfleet now face Stevenage Borough in a two-legged semi-final and the first-leg will be played on 14 March.
Wrexham manager Dean Saunders said: "I am very disappointed but Ebbsfleet deserved to win.
"It was a very even game, we scored a goal and then we got what we deserved and they could have scored more than their three goals.
"I couldn't believe some of the goals that we conceded, we just didn't play as we didn't have enough people who performed to their capabilities.
"We have to react to this punch on the chin, we've had a kick in the teeth so we must roll our sleeves up and come back from this defeat."
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