Will TNTAP replace the old system for IRP for doing things such as transfers, renewal and supplements? Yes, this system will replace the old system for IRP, IFTA and INTRASTATE. All functions will be available on TNTAP. July 12, 2018 21:16 Related articles Will third-party services have a separate account for each client, or will we have an account similar to what we have set up now? How do I renew my IRP account? What credentials are required under UCR?