HTML email saving as Rich Text

Hi,
 
We are having an issue with Outlook 2013 on Exchange 2013, where we need to save emails on a regular basis and it loses embedded attachments.
 
The emails when we attempt to save them are in html format – but when they save they auto change to Rich Text and as such they lose the attachment.
 
We found another guy who has the same issue
 
http://community.spiceworks.com/topic/392648-outlook-items-converting-to-rich-text
 
and there seems to be no solution – drama is I really need one !!!!! HELP!
 
 
We have so far: -
Tried a ‘save as’ to outlook msg with and without uni code.
When saved email is opened, it is in ‘Rich Text’ format
Embedded attachments are missing.
 
Also when responding to emails that are received from clients outside of the organisation, it converts the email to rich text and if sent, do not get past the exchange and remain in the ‘submission queue’ with “a storage transient failure” error for 3 days before bouncing back as undeliverable.
 
TNEF was enabled which gave a whole lot of other errors so was disabled again