@arex Those notes are specific to the game in question, and don't follow you if you start a new game with the same opponent, correct? Because that's what the person is asking for.
In any case, the "notes" feature in the game is ... not very good. I've tried to use it a few times, but because the default tab is on the chat, I inevitably accidentally type my notes into the chat box, telling my opponent what moves I'm considering.
Also, not directly related to this topic, but on the subject of in-game notes, the inability to copy lines from the analysis board in correspondence and paste them into the notes is a pretty obvious deficiency in my opinion.