Hi,
i've just tested the scenario described in this old issue on dotnet 5.0 but it still not working.
#20489
I guess that that feature was not included in the 5.0 planning and unfortunately it's blocking the upgrade of a lot of software due to the regression occurred when switching to the new Routing mechanism in dotnetcore 3.0.
What is the solution to allow ambient parameter to flow between areas for dotnet 5.0 and 6.0 ?

Thanks