I'm trying to track down a JS file to edit it, but I can't find it where it should be via SPD. In the page I can see the callout to it, and if I paste that URL into the browser it opens the script, but it doesn't appear to exist in that location in SPD or on the site itself.
The Site Assets folder doesn't even appear when examining the site contents in the browser. It does show up in Designer, but does not contain the script. I've checked the parent (top-level site) but the script doesn't appear there either.
Does anyone know where I should be looking for this script?