Read post 48 by me, then post 55 by Green As Jade for summaries. If you care to, you can wade through the rest of the thread to see the whys and hows of this rule, including definition of subsequent games.
It is a bad way to handle timeouts, in my opinion, and leads to cheating the system, as you’ve experienced, andysif.
Here’s an example from today for me. 256 moves in, im up by 18 points, opponent abandons game, third in series, my “win” doesnt change my rating at all.