Oh, that makes sense. I suppose that that's a strike against importing comments from a file, and possibly also against exporting them to a file. Then again, the latter would mean you can't get anything but your entries out of Dreamwidth, which isn't very useful to anyone that wants to back up or transfer comments and so on as well.

I don't know where I stand wrt the severity of the issue of being able to change/edit people's comments before an import, but it does strike me as an artifact of how comments are treated here in general. They're in this nebulous space where they're technically owned by the commenter, but not actually transportable with them or directly under their control. That said, taking just my entries with me in useful formats would be an improvement over what I can do now.