Server relocation and upgrade

[wwl]

Hello, I have Roundcube 1.4.2 on an older server with some email accounts and associated contact details.
How can I transfer this installation to a new server with 1.6.5 and all contact details so that I don't lose any data?
thanks for your help
Christian

[Dmitry42]

I think you can copy your WWW files to new server and backup + restore DB from old to new server.
And after this upgrade 1.4 to 1.6 on new server.