The exported XML from here, when imported, creates a db 14.2mb.
When from this db I remove most of the junk it’s still 22.9mb
So somewhere there is 7.7mb of rows that are not needed. Not a big deal.
Images though. I ran the import to see what would happen with images stored outside of wp-content. Answer? They are not imported.
Images that are in public_html/pix, public_html/moreimages and elsewhere stay just where they are. I thought there was a plugin that fixed this – I have a vague memory of someone at work needing something similar but a hunt for such a plugin was fruitless.
I could manually move the images and run a search/replace in the db but that’s for another day if I feel the need.