No, the save is the same - I have to tune the dashboard every time I reload into it. Have just checked - I don't even need to quit the game completely, just go into main menu.
Steps I've taken:
1) Load into the save (the field has reset to 4)
2) Change the field to empty (it is now empty)
3) Save the game
4) Exit into main menu
5) Load into the new save (the field has again reset to 4)
This happens every time I do it.
I'm not sure if it's relevant, but I'm playing the native Linux version, and the mod was downloaded via the in-game manager.