New title repeatedly rejected

I have tried submitting a new title no less than seven times, each time being rejected due to some conflict with the title resembling an existing title. I always check the box that indicates that this is a new title, and is not an existing title. All of the other IMDB criteria has been met. The new title, "The Heartland Series: Battle of Mossy Creek," resembles an existing title that includes "battle of" and "creek." This makes no sense. This screen shot is what I typically see upon rejection, when I want to resubmit the title. I have established that this is a series, with the run dates, etc., and that this is just one episode. I have submitted another title "The Heartland Series: 13 Halloween Special," which had no problems at all being accepted.