assets/js/vendor/backbone-relational.js
function() {
			// Make sure to operate on a copy since we're removing while iterating
			_.each( this._orphanRelations.slice( 0 ), function( rel ) {
				var relatedModel = Backbone.Relational.store.getObjectByName( rel.relatedModel );
				if ( relatedModel ) {
					this.initializeRelation( null, rel );
					this._orphanRelations = _.without( this._orphanRelations, rel );
				}
			}, this );
		}
function() {
			// Make sure to operate on a copy since we're removing while iterating
			_.each( this._orphanRelations.slice( 0 ), function( rel ) {
				var relatedModel = Backbone.Relational.store.getObjectByName( rel.relatedModel );
				if ( relatedModel ) {
					this.initializeRelation( null, rel );
					this._orphanRelations = _.without( this._orphanRelations, rel );
				}
			}, this );
		}
Try to initialize any `_orphanRelation`s