PacePro split and overall +/- not working questions

I created a 14.2 mile course and created a PacePro strategy.  Set the pace to 9:20 and PacePro created an overall time based on 9:20 pace for 14.2 miles, but when it calculated the mile splits it based it on only 13.68 miles.  Do you know why there is a difference?  Maps is wrong?  If I followed the paces on the watch I would definitely be over the desired pace, since most mile splits were 9.40 or more.  Anyone experienced the same problems?

Also when I was testing out the PacePro on a short 10K run for some reason the overall +/- wasnt working.  It was "---" the entire run.  Any ideas what I am doing wrong?