Adept RoN weapons still do not allow you to change the masterwork.
I remember this being acknowledged way back, but haven't seen anything mentioned since. I know the final two perks are stuck as they are, that's the point. Then barrel and mag options allow crafting like normal, but the masterwork still does not allow you to change it. Sitting on some great RoN adepts that would LOVE a masterwork change.
I believe they said they would look into adding it, but when it was announced they didn't tell us that you could change the intrinsic on it.
[quote]Weapon enhancing allows a weapon to be upgraded with enhanced traits, a level, and a memento socket. This upgrade will consume standard currencies (and Spoils of Conquest, for raid weapons) and will be applied through a new tiered weapon mod. Once enhanced, you will be able to modify limited aspects of the weapon at the crafting Relic.
For the initial limited rollout, weapon enhancing will have three tiers:
Enhancement Tier 1:
Replaces the existing Masterwork. Grants an enhanced intrinsic, weapon level, “first enhanced” timestamp, and memento socket.
For raid Adepts only: allows full selection over the barrel and magazine perks (these perks are individually gated by level, same as crafted weapons).
The cost of weapon enhancing tier 1 will vary based on the Masterwork tier that is being replaced. Enhancing a weapon that has a Masterwork tier value of 10 will be much cheaper than enhancing a weapon with a Masterwork tier value of 1.
Enhancement Tier 2:
Weapon level 11 requirement. Allows enhancing of the left column trait perk.
Enhancement Tier 3:
Weapon level 17 requirement. Allows enhancing of the right column trait perk.[/quote]
https://www.bungie.net/7/en/News/article/enhancing-weapon-crafting