outlook meeting request disappeared from calendar

I have an end user that sent a meeting request to someone, the meeting request was accepted, but when she looked at her calendar, the meeting was not there. I found the reply that said it was accepted. I also found the meeting in her deleted items. It just happened today and I'm sure she did not delete it herself. What could have cause it to delete after it was accpeted? I know she has one delegate. Could that have had anything to do with it?
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both users are using same version of Outlook?
check the calendar by opening outlook in safe mode (outlook /safe)
knfitzAuthor Commented:
Yes, they're both the same version.
Brian GeeCommented:
Was the Accepted Meeting Request in the Deleted Items (in addition to the meeting itself)?
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knfitzAuthor Commented:
No the accepted meeting request was still in the inbox. I'm wondering if her delegat accepts the request if it will end up on her calendar?
knfitzAuthor Commented:
nevermind, she sent the request herself.
Brian GeeCommented:
Does the user in question use a Blackberry that is tied to this Outlook account?
knfitzAuthor Commented:
No, but she does have a mobile device that syncs to the exchange server.
Brian GeeCommented:
Is this easily replicated? If so, could we possibly not have the mobile device in the picture (disassociate) to see if this is possibly culpable to this kind of unwanted behavior?
knfitzAuthor Commented:
this has seemed to be very random. Her mobile device syncs straight to the exchange server.
Brian GeeCommented:
<<Her mobile device syncs straight to the exchange server.>>

With that, it doesn't preclude the mobile device from being a culprit to this issue (since changes to/in Exchange reflect to clients accordingly). Without reliable replication, it gets difficult to pinpoint an issue to draw forth a resolution...

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knfitzAuthor Commented:
can you think of any settings that I can check to see why this would happen? Or any other ideas?
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