Rangers have postponed next week's League One fixture against Forfar after four of their players were called up for international duty.
Rangers moved 14 points clear at the top of Scottish League One with a hard-fought 3-1 win over their biggest challengers Dunfermline.
It is in the cup competitions that Rangers can measure how far they are progressing.
A comfortable victory against Airdrieonians was never going to be the most significant event for Rangers.
Jon Daly's blistering goal-scoring form continued as he bagged a double to send Rangers into the fourth round of the William Hill Scottish Cup with a 3-0 win over Airdrie.