Can leagues be imported from earlier editions?

Hi all,
I have been running a "What if the USFL never died" simulation on DDS: PF 2021 and I am 29 seasons into it. i would like to upgrade to the newest version, but only if it is possible to import all of the history, stats, players, teams, etc. from the simulation I am in to the new format. Is that possible?
Thanks,
I have been running a "What if the USFL never died" simulation on DDS: PF 2021 and I am 29 seasons into it. i would like to upgrade to the newest version, but only if it is possible to import all of the history, stats, players, teams, etc. from the simulation I am in to the new format. Is that possible?
Thanks,