Some of Challenges that I have completed, are displayed with * asterisk sign in my map

Some of Challenges that I have completed, are displayed with * asterisk sign in my map, but on Solution page, its getting displayed correctly, also, whenever I am clicking those challenges, editor does not contain my solution. Already, once lost my previous account after completing Front End section, so I have a great deal of time. Please some could explain what is happening, Some of Challenges that I have completed, are displayed with * asterisk sign in my map.
Attached Screenshot

I believe the * means those tasks are required to get your certificate.

@Randallfine is right. The * on the map means that they are required challenges, not that they haven’t been completed.