The young Magpies were due to face the Colliers, who compete in the Northern Premier League Division One East, at Woodhorn Lane on Tuesday, 9th April, with kick-off set at 7.30pm (BST) but the cup tie was postponed following the inclement weather.
However, the last-four encounter will now take place on Thursday, 2nd May, with the venue and kick-off time remaining the same.
The winner of the tie will face either Blyth Town or Newcastle Benfield in the final, which is set to be staged at St. James' Park, as United's youngsters bid to lift the trophy for the first time since 2018.