A/B Theme Testing With Child Templates

Our site uses several child templates depending on the area of the site.

In the pages editor the child template is set for that page. However, when we switch Themes all that info is lost. We have to redefine the child template for that page with the new Theme.

Will the A/B Tester blank out the page template data, using only the default template?

If so is there a workaround?

Thanks