Rudolph,
I see that you're having an issue with having new owners take over existing teams so that they can make keeper selections.
Our new Keeper Management tools do require a new owner to take over an existing team, and a Commissioner can invite them to do so. Just follow the steps included in this Help article:
Inviting friends to a league
Once the new owner has taken over, they can make their keeper selections from the previous year's roster, just as if they'd owned the team the whole time.
They can also change the team name to whatever suits them best.
I hope this helps you getting your league ready for the season.
If you have any other questions on this topic, feel free to reply to this thread.
Good luck this season!