To be honest migration VM may be a way of pain or in most cases can be... I'm not talking about template but component itself.
about general migration please read:
1)
https://www.gavick.com/documentation/jo ... joomla-3-32)
http://www.joomshaper.com/blog/upgrade- ... t-so-scaryBefore migration disable all GK plugin - they can crash your back-end.
Remember after Joomla migration re-install : all GK plugins and modules and then template
Those are general tips, sorry but we don't offer migration support or serves.