There are some sql queries which helps you migrate your SEO values from All in One SEO to thesis. Then what about your SEO when you are moving from Thesis. Generally people wont think this question because once they are with Thesis they wont move may be because of the advantages that Thesis offer or beacause of the money they spent.
By any chance if you are moving out of Thesis and thinking about your SEO then this post is for you. The plugin name All in one SEO importer do the work for you. It provides a simple button to import all the SEO values from thesis to All in One SEO pack.
Link > All in one SEO pack importer
This plugin only works to copy your SEO from THESIS. I wondered there are almost 100 downloads every day for this plugin.