Did you do a cut or a split line?
Chances are good that it just missed that contour, you should be able to edit the feature and select the contour for the "m".
if you upload the file, we could take a look at it.
I did a cut and after your reply I tried the split-line and still did not work, I send you the file to you email was that ok, if not please let me know, "first time user to these Forums" . Any help would be greatly appreciated.