Doesn’t work if you are running multiple sites on a single database

Sadly the package wants to clear the target database completely. This is fine when the wordpress site being migrated is the only site on the database but obviously is not acceptable when the database is serving multiple wordpress sites. My website hosting service charges for each database so it makes sense to run multiple sites off a single database.
To its credit, the manual part of the package did migrate all the non-database components successfully and all I had to do was an export/import of the data tables using phpmyadmin which was available on both the source and target sites.