[Mobhack]

Re point 1 - IIRC, if units are left stock then they refresh from the OOB. However if the designer makes any change (even just editing the name to something that looks good for the scenario like HQ/2/121) then the "changed" flag gets set for the unit. Units that are flagged as changed dont refresh - otherwise any edits the designer had made to weapons etc would simply be stepped on by the standard OOB data when the scenario gets loaded.