I'm about to do a photopost pro import to my xfmg, which already has lots of content. I should still be able to retain id's , is that correct?
yes, except for this:After all, if you retain the content IDs you don't need any scripts for that at all - you can just do basic redirect rules.
We managed to get these URLs redirected as well. htaccess rules do not suffice.It's worth noting that, really, there's no real solution for these types of URLs: