I'm trying to use the WebApp Template Swipe and Spyglass to show a 2017 map as left side map and a 2018 version of the map as the right side map. I've created both 2017 and 2018 as separate layers and saved them in one web map. Do I need to save them to two different web maps? In the configuration window attached, its not clear how to designate the right web map ID if I select the desired left web map id.
It also wasn't clear how to designate each map in the swipe widget editor of the WebApp Builder non-template version (see 2nd screen shot). I have the same problem designating the two web maps in the widget editor.
Thanks for your help.