Sleaford Sports Amateurs were knocked out of the Supplementary Cup as Louth Town staged a second fightback on Saturday.
Liam Tunstall put Amateurs ahead in the 33rd-minute at Saltfleetby in the quarter-final tie, a lead they would preserve until half-time.
But second-half strikes from Michael Brown and Gary Pawson sent the White Wolves through to a semi-final date with Wyberton.
Amateurs return to Lincolnshire League action with two away games in four days.
They travel to Nettleham tonight (Wednesday) for a 7.45pm kick-off ahead of a trip to third-placed Lincoln Moorlands Railway on Saturday (kick-off 3pm).
Sleaford Town Reserves also return to Lincs League duties tonight after having the weekend off.
They play their penultimate league match of the season as they welcome Wyberton to Eslaforde Park (kick-off 7.45pm).