Clean 12v switched source that is hot cranking and running

I’ve heard that wiring the blue and brown wires together works, but some systems have a problem when power drops out on both when the switch goes from Start to Run. The gap between the contacts can cause a no power situation and some PCM’s see this as the car has shut off and it needs to see a start event again before it runs, resulting in a car that fires but won’t stay running.

Any options for this Del?