safari 12 removed by High Sierra 10.13.6
Yesterday the app store ask me to update to Safari 12, which I did and it worked smoothly. Today I updated from Sierra 10.12. 6 to High Sierra 10.13.6 and the Safari version is the old 11.1.2. So I went back to the App Store and tried to update, but it won't let me because the list shows that I already updated to Safari 12, but it obviously is not aware that the change to High Sierra downgrade Safari to the previous version. Any idea how I can update back to Safari in this situation? Thanks!
IMAC (RETINA 5K, 27-INCH, LATE 2015), macOS High Sierra (10.13.6)