Last season’s Trophy semi-finalists Llanrwst advanced to the last 16 on Tuesday with a three-goal victory at Tier 4 underdogs Amateurs.
Ardal North West visitors United led 1-0 at half time courtesy of a Callum Parry penalty.
Conor Davies doubled the away advantage on 59 minutes and Parry struck again after 76 with his 12th goal of the season.
A goals feast at Latham Park saw Llandudno recover from going 2-0 down inside eight minutes to blitz the opposition in the second half.
Aidan McCann and Oliver Sharp both struck early in quick succession for the Robins, Dylan Proctor and Adam Stephens replied for the Seasiders, Tomas Jones restored the home lead with a cracker, but Aidan Higgins levelled before the break.
In the second half, Mark Cadwallader netted twice for the visitors on 69 and 84 before an own goal from keeper Michael Jones sealed Newtown’s fate.
Other last eight results
The New Saints 3 Caernarfon Town 0
Cambrian United 1 Briton Ferry Llansawel 0
Haverfordwest County 0 Barry Town United 2
Owen Davies bagged a treble for Bay with other goals from Ben Roberts (2) and Efan Bowden-Williams.
Subs Aidan Bell (2) and Lennon Kelly replied for NFA, who trailed 5-1 at half time.
Bay are up to third in the table.
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