Andrew, I agree this is a very interesting thread! We've had many instances where a period has been closed in AP and only by reviewing a vendor's statement are we aware of an invoice that we either have not received or has "fallen through our cracks". In either case, it needs to get into AP, and we need it entered in the correct period. I do however, think options are wonderful, and it's obvious by this discussion that different companies would utilize the options differently.

One of the best (in my opinion) that's been implemented was the date range functionality in Job cost that your Adagio support team reference in a previous response. It's made my life SO much easier!!!
By the way, we are one of the companies that does not close the periods in our GL.