Eastbourne Borough and Whitehawk dropped home points in their quest for the Vanarama Conference south play-offs.
But four Sussex teams are through to the next round of the FA Trophy.
Borough went down 4-1 at home to Bromley but should have been ahead at the break.
Sam Beale's brilliant free-kick put them level at 1-1 and Gavin McCallum had a penalty saved with the final kick of the first half.
Whitehawk drew 0-0 in a tight game with Havant and Waterlooville.
Two Pat Harding goals gave Burgess Hill an excellent 2-0 win over Southern league outfit Chesham in the first qualifying round of the Trophy.
Tony Nwachukwu celebrated his new Horsham contract by striking at the far post in the 1-0 home win over Ware.
Luke Blewden got the only goal of Lewes's home tie against Harlow.
And Peacehaven secured a 4-2 win at Walton Casuals, Bognor grabbed a fortunate 2-2 draw at home to Sudbury as Ollie Pearce saw his intended cross find the net in the last minute.
An own goal gave Worthing their 1-1 draw at home to Chatham.
Three Bridges went out 3-1 at Thamesmead.
Worthing and Bognor will both replay on Tuesday. A replay involving Leiston means their league game with Lewes on Tuesday has been postponed.
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