Hmmm, so. I ported my journal over when DW was born (I'm an early user!) and I've been cross-posting since then using Semagic. However, I've a load of comments on LJ (when it was more active) than I do here, because see: more active.

If I imported those comments, they'd come with the posts to which they're attached, which would double my posts, wouldn't it?

I'm not going to do anything with this right now, as the import system is understandably overwhelmed, but it's something to think about. It would be nice to keep those comments, if at all possible.