Do cards that require a weapon level, an Invention or an item spend or lose it?

Question

Accepted Answer

No. A weapon level, Invention or item shown as a requirement only has to be present; it is not lost or spent. Only the resources shown on a card are discarded, and a minus sign before a roof, palisade or weapon means you lower that level.

Robinson Crusoe: Adventures on the Cursed Island

Do cards that require a weapon level, an Invention or an item spend or lose it?