fix(model): set previous values in instances from bulkCreate (#8788)

lib/model.js

@@ -2403,6 +2403,8 @@ class Model {
             instance.set(attr, instance.dataValues[this.rawAttributes[attr].field]);
             instance.set(attr, instance.dataValues[this.rawAttributes[attr].field]);
             delete instance.dataValues[this.rawAttributes[attr].field];
             delete instance.dataValues[this.rawAttributes[attr].field];
           }
           }
+          instance._previousDataValues[attr] = instance.dataValues[attr];
+          instance.changed(attr, false);
         }
         }
         instance.isNewRecord = false;
         instance.isNewRecord = false;
       });
       });

test/integration/instance/values.test.js

@@ -443,6 +443,11 @@ describe(Support.getTestDialectTeaser('DAO'), () => {
             expect(user.changed('name')).to.be.false;
             expect(user.changed('name')).to.be.false;
             expect(user.changed()).not.to.be.ok;
             expect(user.changed()).not.to.be.ok;
           });
           });
+        }).then(() => {
+          return User.bulkCreate([{name: 'Jan Meier'}]).spread(user => {
+            expect(user.changed('name')).to.be.false;
+            expect(user.changed()).not.to.be.ok;
+          });
         });
         });
       });
       });