The old trimmings will be fine. The crystals are still on the sugar leaves. I'd take the stems out though. Also, I wouldn't use the "bud" in the cannabutter at all. Grind the bud up in a coffee grinder until its a fine powder, then mix it into the cookie/brownie flower before adding any wet ingredients. Be sure to mix it like crazy so that each cookie/brownie comes out with an even dosage.
Vi