I've tried the "Single Entity" plus deselecting the "Clickable" option in the images.dat entries and it's still selectable when I drag only that unit. Is there something else I can do?
Thank you for answering....
None.

Zoan -- of course it isn't full understanding. You could ask "is the mechanism by which this counterexample blows up the ONLY mechanism possible for an initial configuration to blow up?"
Zoan -- Heinermann
Heinermann -- it also didn't solve that problem but hey as long as the investors are pleased
NudeRaider -- I have no idea tbh. All I know no human was ever able to solve it, but there's at least a few that beat portal 
Zoan