I have created a custom subset library for material icons to reduce loading times on a flex repeater, but wondering if this custom library would be included in a gateway backup.
Also, is there a way to include this custom library in the dropdown for the explorer? For now, I've just had to manually type paths.
Have you restarted the designer since adding your custom library? It looks like the choices in the list are lazy-loaded and cached once, on designer initialization.