Defective export of a partitioned mesh with MSH file Format version 4
I am actually developing a gmsh reader for the MSH file format version 4. In order to test the reader, I have transformed some ".msh" files of version 2 to version 4 by opening the files in gmsh and then exporting them with Format: "version 4 ASCII". All meshes without a partition were successfully exported, but partitioned meshes were not successfully exported and their ".msh" files version 4 were defective. What could be the reason of this problem? I have attachted the version 2 file and the defective version 4 file of a partitioned mesh.
Thanks in advance.