Yeah, you have to manually clear each graph as far as I know. Setting default values to what you really want saves a lot of time in the future because you can reinitialize all to default in one motion, but that obviously doesn't help much if you set your default values to something you don't want.
I'm still not seeing the issue you are when I open your VI. I would suggest dragging the offending "rawsignals" cluster out of the tab control, dorpping it, and then putting it back in to see if that forces it to load properly. If you move that control around, do the ghost graphs move with it?
