@darenjm Asset CleanUp works well with the Breeze’s “Cache System” from “Basic Options”. However, I’d be careful when mixing CSS/JS minification and combination.
In my tests, Breeze included jQuery in the combined deferred JavaScript and inline JS with jQuery code was not working triggering “jQuery is undefined”. Also, if you use preload feature in Asset CleanUp and combine CSS/JS files with Breeze, then the preload will not actually work. If you want to use the Breeze plugin, you can enable the caching system and other backend features and use Asset CleanUp to minify/combine/preload CSS/JS files if you wish to do so.
As for the CSS/JS chosen for unloading in Asset CleanUp, everything is fine as Breeze doesn’t interfere (it shouldn’t in any way) with that and in case you use the Breeze’s combine CSS feature, it will not include in the combined file any unloaded files and that’s how it should work.