Fire Support and Arsenal X

[Palpatron]

During a units attack an eligible unit with the Fire Support keyword can add 1 eligible weapon to the attack pool during the Form Attack Pool step (CRB pg45). 

Units with the Arsenal X keyword can form up to X attack pools and can choose up to X weapons to contribute to each attack pool during the Choose Weapons and Gather Dice steps (CRB pg42). 
 

However, if the Arsenal X keyword is on the unit that is Fire Supporting and NOT on the weapon profile, does this mean that Arsenal X cannot be applied by the Fire Supporting unit? If Yes, why?
 

If the Arsenal X keyword can be applied from the unit using Fire Support, does this mean other unit keywords can also be applied such as Marksman or Sharpshooter? If not, why not?

 

For Example:

Moff Gideon uses his 3 pip command card to give a face up order token to an AT-ST with all 4 available weapons after upgrades and General Weiss pilot which therefore has Arsenal 4.

A friendly stormtrooper unit performs an attack and the AT-ST declares Fire Support. It has 3 weapons that are eligible for the attack. Can it use the unit & upgrade Arsenal X keywords to add all 3 weapons into the stormtrooper attack pool or can it only add 1 of the 3 eligible weapons as the Arsenal X keywords are on the unit and upgrade cards, not the weapon profile?

This feels like a very important point to be raised so a full and clear answer to all points would be appreciated. 

[Seth]

Hello!

11 hours ago, Palpatron said:

if the Arsenal X keyword is on the unit that is Fire Supporting and NOT on the weapon profile, does this mean that Arsenal X cannot be applied by the Fire Supporting unit?

Correct. A unit that is adding an eligible weapon to the attack pool of a friendly unit by way of the Fire Support keyword may only add one eligible weapon. The Arsenal X keyword will have no effect in this instance.

11 hours ago, Palpatron said:

Moff Gideon uses his 3 pip command card to give a face up order token to an AT-ST with all 4 available weapons after upgrades and General Weiss pilot which therefore has Arsenal 4.

A friendly stormtrooper unit performs an attack and the AT-ST declares Fire Support. It has 3 weapons that are eligible for the attack. Can it use the unit & upgrade Arsenal X keywords to add all 3 weapons into the stormtrooper attack pool or can it only add 1 of the 3 eligible weapons as the Arsenal X keywords are on the unit and upgrade cards, not the weapon profile?

The AT-ST may only add one eligible weapon to the Stormtroopers unit's attack pool when using Fire Support, regardless of the value of its Arsenal X keyword.

This has been answered in a prior post: 

Hope this helps,
Seth