It should be noted that links to the site internally have changed in some cases. I had a link to one of my gallery folders in a post and just edited that post to provide the correct link to the new gallery. Things should be fine going forward, but this will be a problem in some of the migrated posts.
Not a big issue in my opinion - people will need to use the search function to find where the described link really is rather than just selecting it. If this is our biggest problem then I'd say we're in good shape. Nothing is perfect, especially in computer software.