Start with changing to the Detailed view - that should show every task, although it should be found with a search.
If this is a recurring task, i wonder if you didn't mark it complete - if you dismiss, it might not be regenerated. And if you used the regenrate option and marked it complete...
You can't use lists in the custom views. You could use a macro - Create a custom field for Outlook messages
Assuming each user will enter their own name, change this line:
strNote = InputBox("Current Value: " & strCurrent, "Edit the Notes field", strCurrent)
strNote = "Your name"
You're running scanpst on the pst file? If anything, the pst is correct, not the profile. I would make a new pst and import the old one - if you have rules, export them to a RWS files for adding the new pst and import after you switch pst files.
Reminders on Flagged messages go in the data file where the message is. Is there 'this computer only' folders in the imap data file for calendar & contacts? If so, meetings sent to the imap account go into that calendar.
Add the From field to the view and group by it. Then you can drag the RR mail to the correct send folder.
But, unless you to RR up as a connected account in Outlook.com, the sent items should be in the RR folders, where the incoming RR mail goes.
Sent Items is Outlook's doing, iphone creates Sent Messages but Android could too - or it could be the default for the mailbox.. but I suspect the default is the Sent Mail folder (used if you log in and send message).
I don't think you've missed anything. Are you sending mail from the outlook...