I accidentally clicked “I worked on this skill” and now the skill card is gone, where did it go?

If you clicked "I worked on this skill" on askill card, that skill is now in your “Completed” section. You can click on the Completed section from your Full Roadmap View and then choose the skill that you accidentally clicked. 

Just “un-click” the check box next to where it says “I worked on this skill” and after a few moments, you will see that skill card back on the “Remaining” view of your Roadmap. You may have to refresh the page.

Note: not all students will see the option to click the "I worked on this skill" box.