Well, I think everything’s fixed now. If anyone runs into anything unusual, please let me know.
Here’s a tip for other WordPress users who are moving their blog from one site to another: backups directly from the database don’t work. They don’t import properly in Unicode again, which is very frustrating. The thing that works is the WordPress RSS Export and Import. Only it will both export and import Unicode. So now we know!
Happy blogging, all!