Don’t worry, you really didn’t. It may be surprising to find skills that were once gold are now colorful again, but all your lessons that were “completed” before are still completed. We also still track your strength for each word just like we used to.
We went one step further and actually used how many times you’ve seen the words in a skill and how many times you got those words right to determine whether to place you at Level 1, 2, or 3. Since levels get harder as you go up, we didn’t feel comfortable placing anyone at Level 4 or 5, since the old system didn’t give hard enough exercises to place into these levels. Of course, if you already know the language very well, this may not be the right level. But, it is still more challenging than what was offered before.