One of the problems with doing that is that nobody knows what “total uploaded” means.
Much of your communication from BitComet involves negotiating with and communicating to other peers, without actually transferring blocks of files. Is that communication included in the “total”? You can make persuasive arguments for both sides, but nobody knows which is true.
Now much of the “total” is from previous sessions, and which previous sessions? When you turn on the computer, the total isn’t zero, so it’s clearly starting with some previous data. Where does that come from, and whenwhyhow?
Let’s suppose (and this is just a guess) that this session starts with the previous session’s totals. As you go along, THIS session’s increments are added to the displayed number, and you see it, but when the session ends, only this session’s numbers, exclusive of last session’s numbers, are saved. Last session’s numbers are just overwritten.
When you stopped at the end of this session, you were seeing last session’s totals plus this session’s increments. When you start the next session, you will be seeing the new last session’s totals only.
That would account for what you are seeing.
There isn’t much interest in the accuracy of this number, or even of clearly documenting it. You’re the first I can recall even asking about it. Trackers which watch ratios, calculate it themselves, and it’s futile to argue with most of them – they have heard it all before.
Most people concern themselves with ratios on an individual torrent basis, (look after the molehills and the mountains will look after themselves), not least because there are settings to help you do this for single torrents, but nothing to help you watch the overall calculation. But if you keep a good ratio on each torrent, your overall ratio will be good too.
If you would just rather watch the totals, then I suggest you look solely at the comparison of the numbers at a given moment, without worrying about what those numbers actually are or how they’re arrived at. If the ratio is 3:1 then you’re laughing, no matter what the actual count was.