here is the blend file: http://pasteall.org/blend/index.php?id=50397

Something has been funky with the weights of the models i've been importing from source for a project, and i did a little test to show you all what i mean. So what i did is...

• Subdivided the top of a basic cube in blender.
  
• Wrote "test" on the top of the cube in weights.
  
• Exported the cube using ver. 2.10.2 of Import-Export: Blender Source Tools as an .SMD file.
  
• Imported the cube back to blender using the same Blender Source Tools used to export.

Here is how it came out...
https://i.imgur.com/DmzgXY2.gifv (weights; cube on the left is original and cube on the right is imported)
https://i.imgur.com/hSJfyK2.png (edit mode)

My question is, is this a bug with Blender source tools, or is there something i'm missing here?