Though you may be right, I suggest you take a closer look at what is happening, Klaus. I'm not at all surprised that it downloads comments because the publish process is hard wired to do so (the plug-in author would have to deliberately add code to intercept the request for comments). But it does sound odd that files weren't exported, as a minimum, and then uploaded from multiple collections. An export, usually to a temporary folder, should always happen as a result of pressing a Publish button, and LR then allows the plug-in author to define what happens to the exported files, in this case uploading them. A plug-in could conceivably block uploading if more than one collection is selected, but the plug-in author would have had to implement this deliberately with some unusual code, which would be surprising in two plug-ins.