Upfrading from Ubuntu 14.03 to Ubuntu 16.0

[Peter]

A secondary question. I  use virtual machines to run windows so that I 
can use certain programs,such as genealogy, which have no real Linux 
equivalent.   How can I transfer a virtual machine image to a new 
installation. While I have stored all of my data etc, outside the 
virtual machine in my home directory, it would be nice not to have to 
recreate the machines and reinstall the windows software and programs.

As anyone else had any problems in going from Ubuntu 12 to Ubuntu 14?


Regards

Peter Goggin