Permalink – update to what?

I just moved my WordPress site from /blog to the root and followed the 11 steps under “Moving WordPress within Your Site” everything’s dandy except the images in my posts are gone, I realise I’m meant to update the Permalinks Structure, but I’m not sure what to update it to, as my old one was a custom “/%year%/%postname%/” there’s no URL to update, so what do I need to change??