Go-live starts a stabilisation period rather than ending the project. Real usage surfaces things testing does not: edge cases in your own data, habits that do not match the designed process, and reports people want once they see the real numbers. That period is worked through with you before the engagement formally closes.
Expect three kinds of item to come up, and expect them to be normal rather than a sign something went wrong.
The strongest predictor is whether someone internal owns the system from day one. Where an internal owner is named and given time, adoption holds. Where the system is treated as delivered and then left alone, usage decays within a few months regardless of how well it was built.
Plan for a period of adjustment rather than treating go-live as a finish line, and name your internal owner before go-live rather than after. That single decision does more for the outcome than most of the configuration choices.
For what you receive when the engagement closes, read How does Cirro hand over the system to our team?