This morning, the ASC system was found to be blasting signals out after the model change because the inputs and output switches in the main loops were still ON even though all of the Guardians were set to DOWN for maintenance day.  So, I set the SDF to capture that the h1ascsafe.snap should restore the INPUT switches to OFF, then the Guardian will turn them on when appropriate later.  I watched the guardian turn them on during transition, just now, so all is good.