I have an export from a V7 site, both zip and folder. If I try using the zip on the new V10 site it can't determine the version (bottom setting), so have to use the folder. When I use the folder it's missing "Convert Nested Content to BlockLists" option, which is vital in this case. The Nested Content items are in Compositions, if it makes a difference. Is there a trick to making this option appear? Thanks.