After 13 days I finally got my podcast onto Podcasts Connect - YMMV
YMMV= Your Mileage May Vary
After nearly 2 weeks of errors with the "ART BUG" I was left with Apple stating that my categories were doubled up even though my feed was completely correct. Of course I could not submit because of this error. I changed my feed tons of times and there was no change and no response from Apple.
This morning I decided to bite the bullet and recreate my feed from scratch (it was identical right down to the spacing of my old one).
I submitted it as a brand new show and Apple accepted it within 2 minutes! It is currently live on Podcasts Connect!
I don't know if this will work for you but it worked for me. I promptly archived the old submitted podcast and all seems ok now.