Shooting a Unit with 1 visible Model

[Celadoor]

Our group is having a heated debate about the rules around Multiple Shotting Attacks / Unit Visibility.

Here's the scenario.

A ranged unit, containing 5 models, each with 1 hit is attempting to shoot at the Target unit, also containing 5 models with 1 wound each
However, only 1 model from the target unit is visible to all 5 of the ranged models.

Position 1:
The attacks from the ranged unit should be made 1 at a time.  So the first model fires > if it hits and succesfully wounds the Target Unit, the controlling player assigns the wound to the visible unit - who then dies.  Becuae that unit is removed and the rest of the Target Unit are now hidden from sight - so the remainder of the Ranged Unit are not able to fire their shots at the Target Unit.
But if a single attacker, with a single hit, did multiple wounds, then multiple models in the unit would suffer those wounds

Position 2:
All Ranged units that have the same weapon, are allowed to resolve their attacks at once.  If that results in multiple wounds being applied - then multiple models in the Target unit will die.
Any Ranged unit with a different weapon would then be unable to see the Target unit and would have to pick another target.

Looking at the rules, the debatable part seems to be "in some cases" 

Position #1 argues that "in some cases" means "only if the battlecard specifically states that you can"

Position #2 argues that "in some cases" means "only if all the units have the same weapon type"

"

Making Attacks
Attacks are resolved one at a time using the following attack sequence. In some cases, you can resolve all of the attacks made by the same type of weapon at the same time
(see Multiple Attacks).

Multiple Attacks
In order to resolve several attacks at once, all of the attacks must be made by models from the same unit, with the same type of weapon, and against the same target unit. If this is the case, make all of the hit rolls at the same time, then all of the wound rolls, and finally all of the save rolls.
"

[Karragon]

You're looking at the wrong part of the rules to answer the question. You need to look at Allocating Wounds:

Quote

Once all of a unit's attacks have been resolved, add up the damage that was inflicted. The player commanding the target unit must then allocate a number of wounds to the target unit equal to the damage that was inflicted

So it's actually Position 3: You roll all the attack for the unit. Because they can all see the target unit. Once all the attacks have been made THEN you start allocating wounds and removing models

[Celadoor]

31 minutes ago, Karragon said:

You're looking at the wrong part of the rules to answer the question. You need to look at Allocating Wounds:

So it's actually Position 3: You roll all the attack for the unit. Because they can all see the target unit. Once all the attacks have been made THEN you start allocating wounds and removing models

Re-reading the rules, this makes so much sense now ... we assumed that resolving an attack, included applying the wounds - thank you kindly for this, just goes to show that we need to read more thoroughly!

[Kierdale]

So, if the attacker rolls well, the four out-of-sight models can die?