I am chipping in with my two cents worth since this issue has severely embarrassed me - I often add an explanatory note or additional information for the customer to my statement emails, only to now discover that this additional text is just vanishing from the actual sent email! Explains a few things that had been puzzling me, like why I wasn't getting responses to queries I had added to the statement text!

If a solution is ever found for this issue I would be grateful to be included in it's dissemination.