Spells used crafting while adventuring

[ckdragons]

If a spellcaster is also a crafter, and is crafting while adventuring, and the item being crafting requires a 3rd level spell (i.e. haste), does the spellcaster lose that memorized spell / spell slot each day while crafting?

[blahpers]

Magic Item Creation, Creating Wondrous Items wrote:

If spells are involved in the prerequisites for making the item, the creator must have prepared the spells to be cast (or must know the spells, in the case of a sorcerer or bard) but need not provide any material components or focuses the spells require. The act of working on the item triggers the prepared spells, making them unavailable for casting during each day of the item's creation. (That is, those spell slots are expended from the caster's currently prepared spells, just as if they had been cast.)

The other item creation sections have similar language.