Changing Media File of story clip

Hi,

I was wondering in python if it was possible to change the media file of a story
clip without having to delete the clip and rebuild a new clip to match the old
one. 

In the UI, you can right click on a clip in story and go to "Change Media
File" and it allows you to replace the old one. Can this be done through
python. 

I currently have my script get the clip name and use that as a filename and grab
all the properties I need of that clip, then delete the clip and create a new
one with all the old properties, but I'm having issues with things like
translation and rotation setting properly causing unpredictable results.

Any ideas on how I can do this? Any help would be great