Hi, Nosaj. As Vince said those repeating sections appear in your browser but they don't actually exist in the back end until any property of the repeating section is set. So, what's happening is you're making a bunch of blank repeating sections, then updating one, which causes the blank placeholders to disappear because they don't actually exist yet as far as the server is concerned. If you fill them out one at a time as you make them you won't have this issue. Also, no repeating sections with filled in data will vanish like you're seeing there, only completely blank ones.