Have now tried all ID's related to the spell including 54278 and sadly does not work for Empowered Imp. The only way around this I have found was to setup MSBT (MikScrollingBattleText) with a trigger for party member using Spell Name of 'Empowered Imp', this now correctly shows the proc on any of my party members.

Just occurred to me to check Jamba's settings and see if there is away to detect Aura's based on name rather than Spell ID.