Best way to change M values Sketch Properties from selected line features

Discussion created by JoyStraley on Apr 9, 2014
I need to change/edit all M Values in sketch properties from a numeric value to NA. Is this possible to do in some kind of
geoprocessing batch? I have over 400 trackage lines that manually I can select then edit sketch properties. Model builder does not
have an edit sketch properties tool. Seeking a work flow that would help automate this task.
Thank you for any feedback :)