Mar 05, 2015 - 08:01 AM
It is not possible. Also, According to N!4K! "The project files of PSCAD X4 based on xml and be different from previous versions in terms of data structure. Also, after release X4, many components added to master library that not supported by 4.2 and older. So you any way can't import library files and/or case files of the X4 version into 4.2 v."