Do I need to re-register if I am already registered in the I+ programme?

User Manual of the INTERREG+ IT Application Module (available on the web site https://next.huskroua-cbc.eu/) says that Users who have had access to the INTERREG+ system in the 2014-2020 programming period, do not have to re-register, they can use their users in the system developed for the 2021-2027 programming period.