You can affect the course priority of a course within its course settings by:
- Navigate to Academics > Scheduling > Requests and schedules > Departments & Courses
- Select the edit/pencil icon to the right of the course
- Select the Schedule tab for the course
- Check the 'Course Priority' dropdown at the top
If using snapshots (highly recommended), you may also try restoring to the point before the mismatched blocks occurred, and attempt other options within the 'Generate Master Schedule' button/settings, as here:
Additionally, as an example, if a teacher or room conflict may be causing the conflict, you can also choose to schedule only blocks on your first run, and then run the other options in a second/later run (again, from the 'Generate Master Schedule' button):