FA VASE: Flackwell eased through the first qualifying round with a 2-0 victory over Felixstowe.
Warren Coborne put the home side in front on 35 minutes with a left foot shot from the edge of the area.
Sharpshooter Mark Xavier made the game safe on 70 minutes when he rounded the keeper to score.
Flackwell now face Bicester in the next round.
The Heathens' next game is on Saturday in the FA Cup.
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