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When saving a document from an online Office application, the filename of the online document at the time the Office Connector was opened is used. Changing the title of the document in the online application while the Office Connector is open therefore doesn't have any effect.
Office Connector on Mac
The OC might have some issues on Mac. Specifically, this relates to being able to open existing documents from Digizuite™ Media Manager 5 or the OC. The issues are caused by some issues with Microsoft's Office URI Scheme on Mac, which will hopefully be fixed in the future. Until then, full functionality of the OC on Mac cannot be guaranteed.