Copying theme data from BizBoost to BizBoost Pro

How do I copy the data from my current BizBoost Theme to the Pro version? I've just bought the license and nowhere can I find anything related to upgrading the theme, although I've followed the instructions. I really don't want to have to do everything again, instead just copy-paste everything from one theme to the next. I'd suggest adding this feature and/or making it more obvious or providing instructions in the README. Thanks.