Course Reset does not adjust Date Restrictions in several of my courses (Moodle 3.9.4+ (Build: 20210122)). I use the restrictions extensively, so updating them all manually will be a real headache.
There was a bug (MDL-51467) that affected versions 2.8.6 to 2.9.3. The developers fixed it, and the tracker issue is closed, but I'm wondering if, in subsequent updates, something broke. I plan to post something to the tracker, but I want to see if anyone else is experiencing this problem before I do. It may be something unique to our install, and I may need to look for other causes.