I have a problem, which is very similar to another bug reported here: "complete Todos are different from Outlook".
Whatever I do in Rainlendar is almost instantly shown in Outlook. Perfect so far!
Everything then automatically gets synced to the icloud. EXCEPT deleted and finished tasks marked in Rainlendar. The same action in Outlook shows no difficulties with the sync service. Rainlendar must somehow mark them different than Outlook, thus they aren't recognized as deleted by the icloud sync service and remain in the cloud.
I'd appreciate you lookin into this.
Great tool so far, keep up the good work!