I found the main limiting factor was the <base> tag in the HTML would remain pointed to the old URL even after I changed the database. And the variable used in code to make the <base> tag IS bburl. So there must be a cache somewhere.
I did not transfer any "files", this is only the database.
If there are cache tables that I can safely empty after transferring the database I'd like to know what. Given that it is a new forum install on a new server, some cache dumps would probably be good.
That leads me to another question, after transferring a database in this manner, what type of maintenance chores should I run on the database to make sure we have a good start before letting the 20K users back on again?
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