You now need to run a search and replace on the database – including all incidences of code within serialised PHP strings. There is an excellent and free utility written by Interconnect IT, called theSafe Search and Replace Tool.
I can’t emphasise enough that it’s important to handle serialised PHP correctly. If you don’t, then settings will go missing, fields will get corrupted, and your site runs a severe chance of not working on the new location. It’s a pain, but it’s important.
So, download the program, place it in your blog’s root folder and then run it by visiting the appropriate URL.
If you’re getting confused at this point, perhaps you shouldn’t run the program. Just saying, because it can cause plenty of damage!