Board Thread:Questions and Answers/@comment-76.116.128.245-20131103215824/@comment-212.220.206.50-20131105113821

^ That's weird. I can swap my secondary accounts on the fly without logging out from Google account. They seem to be completely unrelated to me.

If we're talking Android, then there's a file called zynga.properties on your sdcard/data/com.zynga. This is the only file Zynga needs to authentificate you.

You can try and recover it from your old device and put it in the corresponding folder on the new device (overwriting the file for the new empty account - just don't forget to back everything up)

IF your old account will get picked up - then you're good. If not, then probably nothing you can do if you're not on FB.