Board Thread:Game Discussion/@comment-27095714-20171230100549/@comment-26829117-20171230204311

I'm going to disagree with QuickNick and say that if you want to be absolutely safe, always backup from device 1 and restore to device 2 before switching play from device 1 to device 2. It's best to be safe.

Be careful though, some elements of play are stored locally and not in your cloud save file. Always make sure you run a WTTT on the device you intend to collect on. It doesn't need to be your best time, just a valid time (you can walk round).