Yes, HyperSizer handles CSHEAR elements. On import, HyperSizer recognizes CSHEAR elements and will re-write them to the .cp1 file during each analysis.
Yes, HyperFEA handles CSHEAR elements. When running HyperFEA the preprocess step copies all shell elements, including CSHEAR Elements, to the _i00.cp1 file. Then HyperSizer writes the CSHEAR elements definitions to subsequent .cp1 files for each iteration.