Is there a way to convert a High Level board into portfolio board/ solutions?

I know that we have the option to convert boards into a project board that can be connected to the portfolio overview board.

But what if we already have an existing high level board that has more than 40 projects in it and we want to convert it to a portfolio board.

Is there a way we convert it to a portfolio board into the portfolio solutions in Work Mngt or do you guys have any suggestion how to do it besides manually creating a portfolio board and connecting each project again?

Thank you! Any ideas are welcome! :smile: