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netclass members deleted when netlist loaded

TDuffy

Hi,

I am having trouble with a specific schematic from a new customer.  Whenever I regenerate the net list and load it into Allegro, it deletes all of my single-ended net members in my net classes in the constraint manager.  It does not delete any diff pair members of the net class.  Is there a way to disable what is writing over my net classes?  There are no special constraints that I am able to find in the schematic. 

Is there a way to disable the constraint manager on the schematic? 

Thanks for any advice.

Terrie

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