I do not know; I've never tried to teleport except by editing the data.000 file. If you edit the values in memory with the game running, I'm not sure how you would trigger the game to update the position. Did you try enabling Caps Lock (to allow the screen focus to be moved away from the character, possibly reducing the instances of the coordinates in memory or the frequency of auto-corrections) and then edit, and click on the ground somewhere to see if moving would jump your character position (if the value stays modified)?