The Peninsula Corridor scenarios (both for the original route and the Gilroy expansion route) are no longer awarding achievements since the de-listing. Achievements were properly awarded before the de-listing. I've completed several of the scenarios, meeting the achievement goals, but nothing was awarded. I also reinstalled the DLC just to make sure it hadn't inadvertently been changed or corrected; this did not correct the issue.
I’m pretty sure now they are delisted no one will fix. There is an app where you can sign them off as done.
You will learn that removing and reinstalling some DLC just because ONE thing does not work is not the best way. If it is that important contact support
I started a thread about 2 years ago, I think it was titled along the lines of "unable to complete LIRR scenario". Several people were able to help out with the issue. The fix involves notepad++ and modifying the build # for specific career and/or standard scenarios that did not display a check mark or trophy followed by removing the SDB cache bin file, allowing it to rebuild. That is a work around for scenarios that you have completed but don't display as complete. Note, times standard scenarios are less forgiving as you may fail the task if you are 1 minute late, causing the end result to display as completed but unsuccessful