The Eldritch Scrapper replaces the 1st, 9th and 15th level bloodline powers.
If a level 8 Eldritch Scrapper puts on a Robe of Arcane Heritage, what will happen? So far, me and my friend have sussed out three potential candidates:
Option 1: The Eldritch Scrapper will advance the Martial Flexibility class feature, due to it replacing the bloodline power.
Option 2: The Eldritch Scrapper will gain hte 9th level bloodline power, but it will be removed again when she reaches 9th level, to be replaced with the Martial Flexibility ability.
Option 3: Nothing will happen, as the robe refers to Bloodline Powers specifically, and Martial Flexibility is not a bloodline power.