Need some help with AI - Ignore Units Guard Position

This command is absolutely driving me insane.

Can someone tell me why it works sometimes and sometimes doesn't?

I have this one ogre it works for and a few other units. If I give them move commands they actually move where I want them and wont go back home after awhile.

However, I've noticed that I absolutely cant get any more units to behave the same way when using what seems to me, like the exact same AI - Ignore units guard position trigger.

I've even tried locking the guard position and recycling it when the unit I want gets to its destination but its like the game totally ignores them.

Any help would be appreciated.

Anyone?

If I am not wrong this command works only for player owned units not for creeps.

Yes! Thanks, a lot.

It doesn't work for units on neutral passive i suppose, I guess there might be more but as soon as I assigned him to a custom team(computer controlled or not) it works like it should now.