I have an OmniOutliner file that I have attached to a note in Evernote. When I attach the file Evernote gives me a warning that the OmniOutliner file is actually an OSX package and that it will be attached as a zip file. This is fine. However if I open the attached zip file, edit the contents with OmniOutliner, and save the OmniOutliner file there appears to be no way for Evernote to know that I have changed the file and want an updated zip file of the OmniOutliner package attached to the note. Am I doing something wrong or is push functionality for OSX packages not available? Edit September 30, 2011: Note this is not solved by choosing the "Open With" dialogue when right-clicking on the note in Evernote because the OmniOutliner file is saved a zip file and then OmniOutliner on my Mac doesn't know how to open zip files.