My podcast's artwork in the iTunes store is not correct

I'm using Soundcloud to host my podcast and have used my account to podcast in the past with few issues. About 2 weeks ago, I decided to return from a year-long break from podcasting a start a new show, using the old show's account. I changed everything over on soundcloud's side with no issues, but my old show's podcast artwork seems to be stuck in the iTunes store.

When you search my show "Mike Vs. The World" in the iTunes store ... the artwork is from my old show "RingRiffs." iTunes pulls the podcast artwork from the Soundcloud account's "profile picture," which is a 1400 x 1400 png file ... and my current soundcloud picture is correct. The podcast's art is wrong, but the individual episode art is correct, which is the weird thing.

I've tried uploading a couple of "test" files to try and flush it out, but that hasn't worked either. I'm up for suggestions. I've attached a picture of the iPhone app to help illustrate the issue. The image under "Podcasts" is incorrect, showing the album art from my old show "RingRiffs" In the section "Podcast Episodes" ... the album art for the two "Mike vs. the World" shows are correct. I'm uploading two different podcasts under the same account.