Eldritch / blood line development

[Zepheri]

I wanna know if Eldritch heritage and blood line development of the arcanist can work fine or the penalty of Eldritch heritage affect the blood line development

[Syries]

Eldritch Heritage doesn't have any interaction with bloodline development (or blood arcanists or sorcerers, for that matter). It's accounted for separately. Any overlap is redundant.