I am just realizing now that I have probably lost a lot more than I thought!!
There is no way to know for sure what I'm missing because I didn't have a screenshot of what was inside of my folders. But now looking for a specific KCB kit I knew I had and it's not there in my "about me" section. I know I had quite a bit of her series with Studio Basic, that I bought (which I can find through the shop) but also when I guested for Kristin and also when I guested for Rubia... argghhh!
My About Me section which has all the emotions/feelings themed kits only has kits from A-D so I know it's at least missing the KCB kits. I'm so sad!