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What you are doing?

Post a minimal code sample that reproduces the issue, including models and associations

console.log(instance.dataValues, instance.toJSON(), Model.build(instance.toJSON()));

What do you expect to happen?

The fields should be identical in all 3 cases. The instance is a freshly selected row out of the database. No updates have occurred.

What is actually happening?

After passing instance.toJSON() into Model.build, the new returned instance does not contain createdAt or updatedAt timestamps. I am manually adding these stamps, and am not using the timestamps option.

Dialect: postgres
Database version: 9
Sequelize version: 3.30