css – Deleted files won’t go away

I have a file that’s auto generated by my theme. It’s called design_storename.css

There are a few changes that weren’t updating on my site, so I deleted that file, changed another setting and it regenerated. The old file is still the one loading, and I can’t figure out why.

I’ve cleaned and flushed the caches, regenerated the file a half dozen times, ran setup:di:compile, reindexed, ran redis-cli flushall, cleared the Varnish cache, disabled the varnish cache, and that stubborn file keeps loading.

What can I do to make it go away and be replaced with the new one?