Losing my mind from jquery validate and knockout
I think that the issue is that the unobtrusive library will have already setup validation on the form, so you would actually need to go in and set the submitHandler like:
// attach the jquery unobtrusive validator$.validator.unobtrusive.parse("#__frmAspect");// bind the submit handler to unobtrusive validation.$("#__frmAspect").data("validator").settings.submitHandler = viewModel.Save;