Splitting My Feed...iTunes Rejected

So here's the story...I've been producing podcasts for some time, been using Podbean as my host, all is well. My podcast is growing into a bit of a network now and I would like to split my category feeds off and submit them to iTunes as seperate shows.

I've pulled the category feeds, run them through Feedburner, and each one has their own feed. I used Feedburner's SmartCast settings to set up the iTunes metadata so that it should pull correctly for iTunes to recognize the difference (different art, description, etc.).

However, when I submit the Feedburner feed to iTunes I get a message saying that the feed has "already been submitted"...which is, of course, not true. Although as I look at the XML code in Feedburner I see a lot of the tags from the original feed coming through instead of the SmartCast data, but I don't know how comfortable I would be with changing that XML code by hand without a good/clear step by step guide.

I've not used Feedburner much, so it could be that there's a setting I'm missing there (the original feed is the Podbean created feed). Any suggestions, links, or tips would be greatly appreciated!

Thanks in advance.