Attachment file name not kept

I’m new to the software but I’ve noticed in my first few tests using the Outlook plug-in that the recepient receives the encrypted attachments renamed with a .gpg extension added, and by pressing the unencrypt button the “save as” option renames the file to untitled-01.dat or something like that. This means that the inexperienced user may make many mistakes, like omitting the extension while renaming, or keeping the default name without paying much attention, only to later not being able to open the file. What would it take to fix this apparently minor issue?

I have added this post as a entry for the GpgOL
bug tracker: