[rt-users] database upgrade

[CLOSE Dave]

Trying to upgrade RT with MySQL (actually MariaDB) from 3.8.7 to 4.2.0. 
I've reached the database upgrade step and it starts correctly. But it 
stops after reaching the upgrade to 3.9.3, with some errors reported on 
3.9.2 as well. But before I try to resolve these errors, I'd like to 
clarify a simple point. When does the old database get copied to the new 
one?

RT 3.8.7 uses the database rt3; RT 4.2.0 uses rt4. As near as I can 
tell, the upgrade script is essentially creating an empty database and 
hasn't made any modifications at all to rt3. Is this expected? Should 
the database content be copied from rt3 to rt4 before all the schema 
changes or after? What does that copy?
-- 
Dave Close