As was discussed in Ipad application save files, there’s a need to save a file explicitly not only locally, but also in the cloud. It could be achieved through a Save button serving both ways: if the cloud mode is enabled, a accompanied checkbox may appear right in the menu, to indicate if the file is to be saved in the cloud. Separating a Cloud Save button from a Local Save button would increase the number of the ways of saving/exporting the file to 5, which is not necessarily a good idea.
The cloud/local switches may also be placed in the Settings, as a dubbing or the alternative.