Hello, I have generated many public transit network datasets across the state of Pennsylvania by local authority (e.g., Southeastern Pennsylvania Transportation Authority and Pittsburgh Regional Transit). I would like to merge them all to run a service area analysis based on provider facilities across the state. I could run the analysis for each local authority separately but that would take quite a long time and I have four sets of providers. Is there a feasible method to combine all of my public transit network data sets so I only have to run four analyses rather than over 40? Thanks!