I have created a circuit in DxDesigner and have several pull-ups resistors using the 'exclude' property (ie they are not fitted). The design has been exported into HyperLynx 9.2 and I have allocated IBIS models to the IC's. But I have noticed that hyprlynx has tried to be cleaver and also defined resistance values to 'exclude' pull-up resistors. Is there a way to stop this or to remove them? I have deleted the circuit reference but it then puts a ? next to it as it now has no model. I've tried to put in a very high Resistance value, ie 99Mohms but I don't think this has worked.