That's ok - although it initially threw me for a complete loop, when I looked at the numbers in detail, it started to make sense.
Thank you very much for that very considered response. Three thumbs up for the answer... And in addition, your dog names on the returns are a plus.
It is totally weird though. I have filed my business return and I owe them some money on that but by April 17th (510 payment deadline). I will be filing my personal return next week (505), earlier than the April 17th date. So potentially, I could be looking at a tax refund on my personal taxes (505), for which I have paid them on my business return (510) after the date when I might receive the personal return refund. I suppose in some accountant's mind somewhere that makes sense. It doesn't in mine.
