We have a recent issue with our sales reps.

If an appointment is created in their Outlook calendar and notes put in the appointment it displays ok on their iPhone/Lumia(windows 8.1) When they edit the appointment notes on their phones the amended notes appear ok in OWA but the notes in outlook calendar are now blank.

I have noticed when I enable cached mode the notes display ok in Outlook. However I want to avoid the use of cached mode in the business.

Hi,

Basic on your post, I understand that notes display blank after change it in ActiveSync device when Outlook run as online mode, however it works fine in cache mode.
If I misunderstand your concern, please do not hesitate to let me know.

I want to double confirm whether all account or some special user experience this question.
How about edit the note in OWA or Outlook client, is it will auto-update to all client?
Which Outlook version are you used? please try to upgrade to latest version for testing.
 
Thanks