I am using Windows Live Mail 2010 on a Windows 7 Pro 64-bit machine.

1) Is there any benefit in upgrading to Windows Essentials 2012 Mail?

2) Is there any fundamental difference between the two? Do I gain anything?

3) If I install WE2012 Mail, can I safely and reliably import all of my existing mail and contacts?

4) Is the email storage location and format in WE2012 Mail the same as in WLM 2010?

5) Are contacts stored in the same location on the hard drive?

6) It has always been annoying that in WLM when I open a collapsed folder tree, the focus jumps back to the top of the list rather than staying on the folder I just expanded. This generally happens the first time you expand a collapsed folder; but it can be totally random. When you collapse and expand the folder again, the focus does not change. Does WE2012 Mail behave the same way?