Export/Import TermStore without any code (Exception XSLT) especially for O365

•     Use Office 2010 client to the output from the web server.
•     In SP2010, create a new document library.
•     Add a MM type column.
•     Open MSFT Word 2010 and save the document lib in the SP lib.
•     Goto %LOCALAPPDATA%\Microsoft\Office\TermSets and look for GUID.XML file that was recently added. (Note: Ensure you hidden files are viewable)
•     Select this file and copy it to you folder.
•     Use XSLT to transfer this content into the Format required to Import CSV.
     
      Here is a document from MSFT, which provides details on the format
      http://technet.microsoft.com/en-us/library/ee424396%28v=office.14%29.aspx