forum post icon still pointing to old location

[swiftor]

A long time ago, I changed my forum url from forums.swiftor.com to swiftor.com but the location of the forum post icon keeps referencing the old url: http://forums.swiftor.com/images/icons/icon1.gif instead of the new one: http://swiftor.com/images/icons/icon1.gif

Both work because of the redirect of course, but every other image is pulled from the new domain, and I can't figure out where and why this particular icon is pulling from the old one.

Which places should I check? I'm not super familiar with editing templates, but I checked the forum display template and it is untouched.

Thanks for any help guys