Hello, when creating a new document from the office-js API with application.createDocument, the newly created document may be saved by using the save method. If you now want to save the document twice, the changes which are made after the first save are not saved anymore. The changes are shown in the document, but the saved document on the disc still has the content from the initial save. If you are wonding, why should one save changes twice, a little explanation on that: The API does not provide a "save as" method (which is very suprising, because its a quite important feature, same as an "open from" function). If you want to save a document with an at least somehow suitable name, you need to use Word default behaviour. Therefore we create a paragraph with the Filename wich is insereted at the beginning of the document, then save the document (Word takes the content of the paragraph and use it as filename) and afterwards, this paragraph must be removed again and the document must be saved again. Result is as explained, the created document can be shown with open and it shows the correct content, but the one which is save on disc still contains the paragraph with the filename.