Adrian, regurgitating the same bull feces about quick books saving only what you save is redundant, and unhelpful. It's also a slap in the face to OP, considering they were attempting to save, and quickbooks logged them out. Your commentary is not addressing the issue at hand, and makes it seem like you are actually a partially developed prototype AI bot, and not a human being.

I too spent 2 hours writing a detailed invoice all to have it deleted while trying to save. Cmon Quickbooks