More side effects of +'Aloc'-'Aloc'

If you add the 'Aloc' ability to a unit then remove it you get a unit that can cause damage without causing insane escaping that's what we knew, it is also "selectable" in some cases. But this unit won't be Enumerated by any GroupEnum* function nor detected by range events what is a property of 'Aloc' units, I find it to be a good thing.

Edit: We are talking about adding Aloc and then removing it, no ShowUnit involved. It seems that the result is mostly the same as with just Aloc but it no longer makes units run away if damaged by this unit, it is odd but really useful, it is like if this unit had alll what I needed and removed what I needed to be missing.

Is there a way to add and remove 'Aloc' to a building so this one can be selected again? Or is there a way to make a unit NOT selectable?

After removing Aloc, hide the unit then show it again, but there are things that won't work right anymore, when you press alt the building will not appear and when you hover the mouse it won't show the name.