When I save a draft to the Drafts folder of my IMAP account with another desktop application such as Thunderbird, and open it again in Aquamail, Aquamail opens it quoting the existing body text. This does not occur if the draft was initially composed in Aquamail.
This is apparently the same as newbielink:http://www.aqua-mail.com/forum/index.php?topic=356.0 [nonactive].
This is very annoying as it prevents finishing or sending from the mobile device a draft message composed in another mail application.