Cannot fully rearm vehicle for the second time using ACE 3

[Rawshark 11]

I have been testing this out on the editor and it seems that when you rearm a vehicle (eg: M2 HUMVEE) that has its ammo depleted the second time around, ACE logistics does not want to rearm the whole turret.

Just to be clear, when you first re-arm an empty vehicle at the ammo truck it will rearm the whole vehicle (all 5 mags in the case of the Humvee) but if you try and rearm a second time..the ammo truck will only transfer 1-3 mags into the Humvee turret.

Is this a bug or am I doing something wrong. FYI, The rearm settings module is set to Rearm Amount: entire vehicle & Ammo supply: Unlimited ammo supply.