Ground units not doing what they've been told

[Gunfreak]

I ask a ground unit to hold fire, it still shots, I ask a ground unit to hold, it still wanders(I turned off disperse under fire) I set ground unit to immortal it still dies... I understand that some orders seem to cancel out other order(like turning off AI, seems to nullify immortal) But why can't the orders be absolute.

Hold(Don't move an inch.

Hold fire, don't fire under any circumstances.

Fire at point(only fire at that point noting else) 

Restrict targets air targets(stop shooting at air targets, this one doesn't seem to work ever) 

Immortal( don't die)
Invisible(AI shouldn't see the unit)

etc. I just want my targets to stand still, fire at the point I've told them, and nothing else, don't move about, don't start blowing up stuff I've asked you not to blow up.

[razo+r]

Uh, I haven't had much issues with orders like these. 

Can you upload an example mission? 

[Wrecking Crew]

I have not had issues with Immortal or Invisible.

You don't mention Alarm State.  Try setting that to Green to see if your units behave better.

I have found that in order to keep ground units moving through hostile territory, I'll set both Alarm State to Green and ROE to Weps Hold.