I think you misunderstand what I meant here Luke. Stacking means instead of have 15 Enchants or recipes in your inventory spread between 15 slots it changes to Scroll: Enchant Weapon (D-Grade)(15). Just so they stack on each other to save inventory space, and by recipe book i mean so you dont have to have all your recipes taking up space in inventory they will be registered to a recipe book.

I understood what you meant

And right now you lose your B grade recipe when you have crafted.
There is two things by adding it to a recipe book either you can:
1. Put the recipe into the book and craft without another recipe and just materials and parts.
2. Put the recipe into the book and farm another recipe and use this for craft + materials and parts.
I think the system is good as it is, that we just need one recipe, parts and materials for craft.
And yes by stacking recipe and scolls so on we get more space, but I think its fine that it takes some space it makes us creative how to use the space in our wh, cwh and inventory.
Perhaps later in the game when server is older we can change this, but as it is now I think it is fine.