How to automatically migrate Office settings?

Is there any concise documentation that describes how to automatically migrate Office settings from various versions (2007, 2010, 2013) to Office 365 Pro Plus?  I need to move the following for tens of thousands of users:

•signatures
•custom dictionaries
•templates
•ribbon settings
•quick access toolbars
•etc.

There are various articles that describe how to manually move various pieces (e.g. how to export the ribbon settings) but I need to know how to do all of this, for many versions of Office, for many users at once (probably via scripting). 

Thanks!