Yes, i was using and left a 16gb I gave to wife when my 32 arrived.
So to be clear, I only backed up data and transferred the file over to new phone. Updated (32) to the point where the old one was at, then restored it (data only back up) and here I am today a week later and all is well in my world.
I wasn't sure it would work, but tried and made life simple.
Sent from my Nexus 5