Automapper not mapping my list properties - asp.net-mvc

Question

In my MVC5 project I use automapper to map my viewmodels to my models. But it seems that I'm doing something wrong, because not all my properties are mapped.
Here is my View Model
public class PlanboardViewModel
{
public int Id { get; set; }
[Display(Name = "Titel")]
public string Title { get; set; }
[Display(Name = "Omschrijving")]
public string Description { get; set; }
[Display(Name = "Verzoektype")]
public int AbsenceTypeId { get; set; }
public List<PlanboardEventMapViewModel> EventMap { get; set; }
public List<PlanboardEventDetail> EventDetails { get; set; }
public List<PlanboardRequest> PlanboardRequests { get; set; }
}
I use a separate class for my profiles:
public class PlanboardMappingProfile : Profile
{
protected override void Configure()
{
//CreateMap<AbsenceType, AbsenceTypeViewModel>();
//.ForAllMembers(opt => opt.Condition(s => !s.IsSourceValueNull));
CreateMap<PlanboardViewModel, Planboard>()
.ForMember(dest => dest.CSVHPlanboardEventDetail, opt => opt.MapFrom(src => src.EventDetails))
.ForMember(dest => dest.CSVHPlanboardEventMap, opt => opt.MapFrom(src => src.EventMap))
.ForMember(dest => dest.CSVHPlanboardRequest, opt => opt.MapFrom(src => src.PlanboardRequests));
CreateMap<PlanboardEventMapViewModel, PlanboardEventMap>();
}
}
In my repository I have the following code:
public int Create(PlanboardViewModel planboardViewModel)
{
try {
// map the viewmodel to the planboard model
// Map the planboards to the view model
var config = new MapperConfiguration(cfg =>
{
cfg.AddProfile<PlanboardMappingProfile>();
cfg.CreateMap<PlanboardViewModel, Planboard>();
cfg.CreateMap<PlanboardEventMapViewModel, PlanboardEventMap>();
});
IMapper mapper = config.CreateMapper();
Planboard planboard = mapper.Map<Planboard>(planboardViewModel);
// Some more code here
When I submit the page and use the debugger, It shows that planboardViewModel has a list of values for PlanboardEventMapViewModel, PlanboardEventDetail, PlanboardRequest. The system is not telling me that there are any errors. When I check planboard after the mapping, it does not show any values for CSVHPlanboardEventDetail, CSVHPlanboardEventMap and CSVHPlanboardRequest.
EDIT
My PlanboardModel is created DB First EF6:
public partial class Planboard
{
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2214:DoNotCallOverridableMethodsInConstructors")]
public Planboard()
{
this.CSVHPlanboardEventDetail = new HashSet<PlanboardEventDetail>();
this.CSVHPlanboardEventMap = new HashSet<PlanboardEventMap>();
this.CSVHPlanboardRequest = new HashSet<PlanboardRequest>();
}
public int ID { get; set; }
public string Title { get; set; }
public string Description { get; set; }
public int StatusID { get; set; }
public Nullable<int> AbsenceTypeID { get; set; }
public virtual AbsenceType AbsenceTypes { get; set; }
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
public virtual ICollection<PlanboardEventDetail> CSVHPlanboardEventDetail { get; set; }
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
public virtual ICollection<PlanboardEventMap> CSVHPlanboardEventMap { get; set; }
[System.Diagnostics.CodeAnalysis.SuppressMessage("Microsoft.Usage", "CA2227:CollectionPropertiesShouldBeReadOnly")]
public virtual ICollection<PlanboardRequest> CSVHPlanboardRequest { get; set; }
}