Using OL on Windows Phone 7.5 to reply to a message: the reply is shown in the Sent folder of O365 in Outlook but, and this is the problem, the original message is NOT shown as having been replied to. Likewise in OWA.
Conversely, if the reply is sent from desktop Outlook or OWA the fact that a message has been replied to is shown on WP 7.5 Outlook.
Is this a temporary issue with the servers or a permanent, and very undesirable, "feature"?