I have a user with Notes Client 6.5.4 once she replies to an email it disapears from her inbox, if I check on the server the email is still there, I have checked her views and its set to show all, and she has no rules setup, any help would be great.
Check to see if she is sorting by date. Sometimes the user clicks on that small column that shows the ‘forwarded’ or ‘replied to’ status with a small icon. Once you forward or reply to an email, it puts it all the way on the bottom. Sounds trivial but I have seen it many times.