Exchange 2013 - Attachments in *.EML files missing in non-cached mode

Hello
Our client recently upgraded from Exchange 2010 to Exchange 2013. Since the migration they have had issues with an archiving system they use. Bascially the archiving system creates .eml files of journaled emails.
The issue our client has is when Outlook is running in non-cached exchange mode any attachments within these .eml files are missing when the eml file is opened. If they change to cached mode the attachments show up fine.
It's almost identical to the following issue I found while browsing the net:
http://social.technet.microsoft.com/Forums/office/en-US/b9a390a9-e014-4098-ad6e-dd377a53422a/office-2010-exchange-2010-attachments-in-emlemails-are-invisible?forum=outlook
Aside from the Exchange version this is exactly what is happening for our client. Is anyone aware of whether the same issue fixed in Rollup update 5 for Exch 2010 SP1 is still present in Exchange 2013?
Our client has already said they don't want everyone using cached exchange so I can't tell them that. Is there a way to manually fix the issue or are we going to have to move back to Exchange 2010 while a patch is sent out? Does anyone know exactly what
the issue is?
Many thanks in advance.

Hi,
I know there was this issue with Exchange 2010, but haven't noticed the same issue in Exchange 2013. The suggestion would be to keep Exchange fully updated - It seems you have done so.
I'm not sure when SP1 will be released, you may post this question to Exchange forum since it may be more related:
http://social.technet.microsoft.com/Forums/exchange/en-US/home?category=exchangeserver
Thanks,
Melon Chen
Forum Support
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    TechNet Community Support

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    Please“Vote As Helpful”
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