I have had numerous problems with notes on 888. They frequently change colours randomly, Yellow becomes Green and Red becomes Orange. Recently, all my notes (thousands) simply disappeared.
Recently, all my notes disappeared. I decided that this was reason enough to contact CS again. It took a while (over a week), but their response was that they didn't support the notes feature. I believe they suggested that I copy all notes to a separate file - or save all notes in their current file EVERY TIME I PLAYED ON 888. After a few weeks, the notes reappeared (with wrong colours). I took this as a win.
From your description of your problem, I don't think I have experienced this before. I look forward to problems the next time I play on 888.