When connecting to Domino server via IMAP using non-English(Arabic, Korean, etc.) Outlook client, the "Sent Item" and "Deleted Item" folders are not being updated.
You already have the notes.ini parameter EnableImapFolderSynch=1 and re-enabled the IMAP support on the database but still these folders are not being updated.
When using Outlook in English language, the Sent and Trash folder is being updated properly.
On Notes/Domino environment, the sent and draft messages are stored in a VIEW called ($Sent) and ($Draft). However on Outlook/IMAP they store the sent and draft mails on a FOLDER. That is why when you check the folder list on designer client you would see folder with an alias of "IMAPSent" and "IMAPDrafts". These folders are use for IMAP sync by the Domino server.
Outlook client that is not in English is creating new folders that translates to "Deleted Items", "Sent Items", and "Junk Mail".
If you open the database using a Designer client you will see folders created by the user ID you use to setup IMAP.
Since the other folders are created by Outlook, they are not used to sync Sent and Draft mail by the Domino server. This can cause confusion to end users on why those folders are empty. The folders (in English language) "Sent", and "Draft" can be used to view sent and draft mails.
So it will be great if Domino syncs "Sent" and "Draft" with the translated folders created by outlook in non- English IMAP outlook Client.