Game Mechanics: Damage disciplines not affecting non-standard attacks

[Shiftin]

Currently it is still possible to min backstab with duelist. I don't know if this counts as a backstab or duelist issue, but it seems like one of them.

The lucy description of duelist is:
1: Increase All Skills Damage Modifier by 100%
2: Increase All Skills Minimum Damage Modifier by 400%

So it should both double the max you can hit for and 4x the minimum for "all skills". Backstab is currently not being pulled in as a skill per duelist. Should it be?

Per Aadill, there is a similar issue with ranger archery damage which I will let him expand upon.

edit: to clarify, duelist does double your max backstab roughly by double, it's the second half that is acting up. Kanras would you be willing to share the classic tigole logs you have?