An understrength Boston Town side bowed out of the county cup against their Northern Counties East League opponents.
Lee Beeson continued his fine goalscoring form by firing home from 20 yards after 7 minutes.
But the hosts turned it around to lead 2-1 at the break.
The turning point came after 65 minutes with a disputed red card.
The Poachers, already missing Jordan Tate, Fraser Bayliss and Toby White, now lost Tom Mucklin, who was sent off for the first time in his career, harshly judged to have been the last man when he committed a foul.
As Boston pushed for an equaliser, the home side sealed their place in the semi-finals with a late third goal..
Also through to the last four are Brigg Town, Bottesford Town and Skegness Town.
Town: Woolley, Dilley, Thompson, Ofushine, Ford, Mucklin, Beeson, Sylla, Wadada, Limb, L White; sub: Borbely