My team created 2 backlog placeholders, Green backlog and yellow backlog and these placeholder sprints are created mainly for groomed stories and in-grooming stories. Team is trying to add portfolio and I was told that if the sprints are not named in sequence for ex: Sprint 1. sprint2 etc, we wont be able to create a portfolio. could you please let me know if there is any workaround for the issue? team really likes the green and yellow backlog idea. Thanks for the help.