In Tosca ANSA® environment,
once RUN_SMOOTH command finishes, the elements of the input
model are replaced with the smooth isosurface representing the optimization
result (with the exception of loaded elements that remain unchanged).
At this point, the model can be saved in the format of the desired solver
using File > Output > <solver name> menu command.
However, this model will only contain the geometry information, namely
the smooth isosurface (or model surface) generated by Tosca Structure.smooth
plus the loaded elements copied from the original model.