I posted this to a particular game thread, but realized it might be more helpful here. This is in regards to what card should be discarded, but covers more detail about how the sheet populates the "next hand" and "starting hand" portions of the post.
The next hand and the current hand shown in the spreadsheet should be the same unless you had a technician draw, which would reshuffle the cards in hand. The thing that is different is the starting hand marked in the next post. My opinion is the convention should be what is shown in the hand column of the spreadsheet. Of course it's all honor system.
The sheet is programmed to draw x cards, then shuffle what is shown in your hand, then when generating the post next hand shows the shuffled set of cards. Meanwhile, the starting hand shown in the next post shows the order in which the cards were drawn. A spectator would be able to identify the 2 cards drawn from the deck before the reshuffle, and then the 3 cards drawn after, and then a technician card, and then Flagstone Garrison draws when looking at a starting hand listing just on the order of the cards.
I used to not shuffle the next hand listing, but decided to shuffle it because otherwise someone could try to pick a number in order to hit the cards drawn after a reshuffle, or before, depending on the situation. It's like shuffling your hand before letting someone pick from it.