This blog shows a simple example of adding ListItemID to the managed properties in
item_default.html. I can see the change reflected in
item_default.js after uploading the html file, but when I put a break point while searching, ctx.CurrentItem does not have the property ListItemID.
In the blog it shows that when you change a display template's managed properties the Result Types needs to be updated. I do not receive this prompt to sync when I alter the display template.