[PCB_FORUM] Allegro Sub drawing / Via stitch problem

Hello all,
When Exporting a Sub-Drawing I found that any vias in a shape used for stitching...connected to a shape, but has no traces to a pin...looses connectivity and sometimes connect to a different plane after import sub-drawing. The only way I have found to fix it is to ALSO route a trace from a pin to the via to force the connection.
Is there a way to locate any occurrences of this prior to exporting a Sub-Drawing?
Thought maybe dangling wire reporting as dangling via...but a Dangling via is defined a a via with only one connection from a pin. These vias simply dropped in a shape for thermal reasons do not get flagged. 

Any thoughts as to how to find them in a design?

Thanks,
Mark


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