LeeDurnford
Yeah, I was confused by "duplicate account" and also what was meant by "upload them all again".
Do you mean migrate everything from one device to another (i.e. you are changing your 'primary' ST device? Or you are making sure you have a process to keep a 'backup' device 'up to date'?) or are you literally asking if there is a way of keeping 2 devices completely 'in sync' via iCloud so that you could grab either device and use it?
If you could more clearly articulate your question I'm sure there will be a simple answer, we just don't know what question we're answering!