Export from photos backup

[Sleber]

Hi i got several backups from old xperia phones. 

I want to export only photos from those and move them to my Gmail photos account. How do I do that?

Is there a way to keep metadata and prevent doublets? 

[gio10]

voglio trasferire gli album musicali (quasi 400) che ho sul xperia z3 compact sul nuovo xperia xz2 compact. grazie.. GIORGIO DOTA

I want to transfer the music albums (almost 400) that I have on the xperia z3 compact on the new xperia xz2 compact. thanks .. GIORGIO DOTA

gt