I'm completing work for a client that involves a migration from Classic ASP to PHP with Adsense involved as the primary revenue-maker. This is a straight-up ASP to PHP conversion so the domain and all pages will be EXACTLY the same save for the .asp page extensions becoming .php in the new arrangement.
My question/concern is: Will this sort of migration effect anything Adsense is doing on the site? Should we expect an RPM/revenue drop as auction placements possibly reset and the site has to rebuild within the Adsense system?
My gut tells me NO, that everything should be fine if left as-is, but I just wanted to be sure what to expect before I pull the trigger.