The VFPX Upsizing Wizard allows you to upsize the tables in a database container to a SQL Server database. It can be used visually by running UpsizingWizard.app or programmatically; see TestEngine.prg that comes with the Upsizing Wizard for an example.
One thing the Upsizing Wizard doesn't do is support free tables. The new Upsizer utility gives the Upsizing Wizard the ability to do that. I've used it on decent sized data sets (more than 100 tables with 10 GB of data total) and it works very well. One thing I like is that I can run it over and over to upsize to the same database; that allows me to refresh the SQL Server database with changes in the VFP data while we work on upsizing a VFP application.