6
Here is what I would do. Of course 200kb is rather small so shouldn't be much trouble.
Log onto phpmyadmin, do an export of the current database with the Add DROP TABLE option. Compression as none, but check to export to file. Once you have this file use this for a template and insert either the Add DROP TABLE option to your backup, I don't like the idea of multiple sites on one backup, or insert the target data into the template. You can do either with your favorite text editor.
Once you have done this rerun the SQL on your database. It should drop existing tables before inserting your tables with data from the backup.
I know this sounds like a lot of work, but once you look at the structure of the template it should not be too hard to understand.
HTH.
