I'm having an issue with the correct custom.css file loading. I created a copy of the T3_bs3_blank template. Deleted the custom.css file already in the CSS folder and replaced it with a new custom.css file. But the template continues to load the old custom.css file. The code contains this:
<link href="/templates/t3_bs3_blank/css/custom.css?t=021121v1" rel="stylesheet" type="text/css" />
Where is that coming from and why does it supplant the new custom.css file? How do I unsure my new custom.css file loads?