Help? iPhone gmail contacts not updating?

I'm using carddav for my contacts (which happen to be my google contacts) on my 5s. Ever since I got the 5s, all the contacts that I've added only exist on the 5s — that is, they aren't actually in my google contacts anywhere else.

Now that I'm on a Nexus 5, how do I get my google contacts to update with all the new contacts on my 5s? For what it's worth, I still have the 5s and all it's up to date contacts.