After changing runaway I'm still directed to old one?!

I often check my Flight Planner after accepting a career mission to see if a different runaway is better for takeoff (mostly to a shorter taxi path or to not do a 180 turn at the end). I send the plan to avionics and ATC and start the mission. But when I ask for taxi the ATC directs me to the old runaway! Why? What I’m doing wrong? Is it a bug?

Not sure if it is the solution, but check if the ATC enforce flight plan option is enabled:

Yes, I have it enabled. Tried today to change the landing runaway and avionics guided me perfectly, but when announcing to ATC on final that I was about to land, the “mission steps” showed the opposite runaway and as a result, I landed with a penalty…

On your 1st post you were reporting an issue with the departure runway. Is that still an issue with the ATC enforce flight plan enabled ?

For the issue related to the landing runway, could it be the same one than reported here ?: Career changing landing airport runway from the one in EFB to the opposite one

I had that option enabled from the start, so it happens on both departure and landing