@joshwalsh I’m having the same issues after upgrading to 1.0. I’ve posted a question on StackOverflow for this: http://stackoverflow.com/questions/18679113/ember-data-1-0-loading-hasmany-records-into-view and I’ve added a comment to this thread as well: Migrating from Ember Data 0.13 to 1.0.0 Beta 1 - My findings
Please keep us posted if you come up with a solution.