To convert a GAMBIT neutral file to a mesh file that Ansys Polydata can read, do the following:
Select the .neu file under the relevant Gambit branch in the project tree.
Select the Tools > Convert a gambit neutral file menu item.
Tools → Convert a gambit neutral file
Select (or create) the simulation where you want to import the mesh.
Ansys Polyman will convert the selected neutral file to a mesh file, and store it under Mesh file in the selected simulation branch of the project tree.
Note: GAMBIT is no longer provided as part of Ansys Polyflow.