[Mozilla Enterprise] update firefox ESR 32 bits to 64 bits

[Florent Lagoda]

Hi,

I want to update Firefox ESR 32 bits to 64 bits on several hundred 
computers (Windows 10).

But in my test i meet various problem :

     -Firefox 64 bits not use the same profile that the 32 bits version. 
All preferences, extensions, shorcuts disappear for users.

         Does it exist solution to automate the "recovering" of the 32 
bits profile on the default new 64 bits profile ?

     -Firefox 64 bits not replace the default web browser.

         It's a problem because 32 bits version are not uninstalled 
during installation of the 64 bits version and stay the default browser.


Do you see other things to be careful on this situation of move 32 bits 
to 64 bits ?