@hodgestar With Backbone, you usually set the url as one of the model prototype's properties, and use that for syncing the model with the server side (as opposed to getting an attribute from the server side). Maybe we should keep the url the models use to sync with the server side in the Backbone Models, and have the ['secondary' urls](https://github.com/praekelt/vumi-go/pull/638#discussion_r5903604) sent over as the data that becomes the model's attributes? I think that might make sense, since once we move the contact management to the http api, the url property on the model's prototype will go, and the 'secondary' urls will continue to be used as the model's attributes. What do you think?