I'm trying to build web apps in WAB using my Arcgis Online web maps. Is there an easy way to switch either one web map out for another one (rather than creating new) or using a web map but not having to configure a new web app from scratch? I won't want to have to configure the web map again if using an existing web app and I don't want to have to reconfigure the web app using an existing web map. It seems like I will have to start from scratch one way or another.