Data Modification "Edit..." changes to parameters are not saved even after saving file and exiting the program

Hello, 

This is an issue that I have seen with previous versions and still has not been resolved. When the need for different material properties and other design parameters is different from the generalized materials tab parameters, the use of the Data Modification is very handy. However, every time the program is closed (even after saving) and reopened, the modifications are reset to material tab generalized parameters and have to be input again. It would be a time reduction and a decrease of proneness to error if the modifications remained after closing the model.

Thanks