that is because she's not supposed to be in that body. like his holiness said, she shouldn't remember her past life if her soul is in the right body because she is destined to live in that new life. the reason why it's not compatible is because the original soul of raeliana's body approached the dark mage to change her fate, which they switched their souls. iosa said that blonde is his destiny/fate but it has been foreshadowed a long time ago which i've never paid attention too much before. noah falling in love with raeli/eunha is NOT IN OPPOSITION to the original novel. noah was always destined to love 'beatrice' - the soul, not the body or the character. thus, it doesn't matter which body eunha's soul is in, he will always recognize and find his way to her. like when noah felt angry about raeliana being kidnapped, noah gets angry about it which HE'S WONDERING WHY he felt that. ofc they just met for a short time which i realized that this foreshadowed that raeli/eunha is the destined lover of noah which also leads us that she's the real beatrice. the feeling he felt before when beatrice and him bumping to each other, noah felt a strange feeling and asked himself "who WAS beatrice" but when raeli saw them together, noah didn't felt anything, that is because OUR NOAH LOVES OUR RAELI

. also, noah said before that maybe the original soul of raeli is just in their world, wandering, which is true but they never realizes it's on beatrice's body. if we paid more attention into small details, we can clearly answer what our questions.