--- Operating System, Graphics card ---
Win764 gtx560ti

--- Blender version with error, and version that worked ---
svn 57131

--- Short description of error ---
when I export my key config, Blender miss something, so when I import my saved keymap, something is not stored and went back to default.

--- Steps for others to reproduce the error (preferably based on attached .blend file) ---
An example: Import my (attached) keymap, you can select by click+drag, right?
Whitout change nothing, export it and save with another name.
When you reimport the new file, you will notice that click+drag function is lost, and it is back to default Blender keymap.

thankyou~