Does using a Discipline cost still have the traits of the action? eg when using Diplomacy Breaks Down can yasuki nakura (pay for econ actions (with sensei pay for political actions) pay for some of the discpline cost?
Does Discipline have keywords?
A topic from AEG's L5R CCG Rules forum, copied for Oracle of the Void from a copy of the forum saved in October 2015, so pages it didn't save are missing. Players' names are left out; the rules officials are named. Rulings are as they stood on these dates; later rulings, the rulebooks and the Rules Archive may differ.
Does using a Discipline cost still have the traits of the action? eg when using Diplomacy Breaks Down can yasuki nakura (pay for econ actions (with sensei pay for political actions) pay for some of the discpline cost?
A Discipline action adds the additional Discipline cost directly to the action when playing it out of the discard pile, so yes you can used cost-specific Gold to pay for it as you describe.