igCombo loader vs no loader

I have two combos on a page one uses the loader: $.ig.loader('igCombo', function() {$('#MainMenuSearchCombo').igCombo the other does not $(function () {$('#BasicCriteriaReceiptIdType').igCombo(

Do you know what triggers using the loader vs not? Only 1 combo uses the loader and the rest don't and I can't figure out why that one is. I need it not to so any direction to point me in would be helpful.