Missing Note - Notepad/Yahoo

I recently did a major yahoo mail clean out. I am not sure how or if it is what happened but since then I noticed one of my notes on my iPhone is missing. My notes are synced with Yahoo. I can see my other notes in my Yahoo account, but not this one (very important) note. I put in a 7 day deleted mail recovery request, but I believe it's been longer than that and I don't even know if that would restore a note anyway. I never went into my notes folder in Yahoo so I'm not sure how it would have been deleted while I cleaned out my yahoo inbox, but it's not anywhere to be found in my Yahoo or on my phone. Are there any tricks to finding notes that may have been deleted from Yahoo?