[BUG] Mesh groups disappear upon activating mesh module

Attached a project created with Salome Meca 9.7.0
When I open the project, the face groups on Mesh_1 are present (XMAX, XMIN, ZMAX, ZMIN, YMIN). Same for Mesh_2. But when I activate the Mesh module to modify the mesh, the face groups disappear.

ldcf.hdf (1.1 MB)

Groups of Faces are present :arrow_up:

Groups of Faces have disappeared :arrow_up: