Issue with adding new spell to a trainer in vmangos 1.12.1

[Ayos]

Hi!
I'm using the vmangos 1.12.1 (self-buided) core, and I can't seem to get over this issue.
So my problem is, that if I add an already existing and working spell to a trainer in the npc_trainer table, it just never appears.
Also, if I .learn the spell, it will appear on the general tab of my spellbook, instead of holy.
I thought this could be the issue, but when I changed the spell's columns both in the spell.dbc (for server and client patch) and the spell_template table to be similar to an existing paladin spell, the values, like name changed, but the spell still won't appear at the trainer.
I'm quite lost here, does it require to be edited elsewhere?

[Ayos]

Figured it out! I had to add the spell to SkillLineAbility.dbc aswell.