Just to let you know: it looks like there's a bug in the export/import function. When I have a page with a Joomla Module addon the ID of the module is not exported and thus giving an empty module at the moment of import. I do understand why you don't export that ID (it's almost certain that ID is not the correct one at the site where it is imported) but now it has cost me a lot of time to find the cause of the problem this caused. So a warning or maybe exporting the name of the used module as part of the admin label or something would be a great improvement. Or maybe a popup at export tellling this could be a problem, with a list of the modules IDs and names.