AutoMapper: Ignoring Nested Property in Mapping Configuration Results in Null Value

public class CompanyUpdateRequest
{
    public int Id { get; set; }
    public List<ApiUpdateRequest> AssignedApis { get; set; }
    // Other properties...
}
public class ApiUpdateRequest
{
    public int Id { get; set; }
    public string ApiKey { get; set; }
    // Other properties...
}

And here is an entity called Api

public class Api: BaseEntity
{
    public string ApiKey { get; set; } = null!;
    // Other properties...
}

in my mapping profil i've added the following

CreateMap<CompanyUpdateRequest, Company>()
    .ForMember(dest => dest.AssignedApis, opt => opt
    .MapFrom(src => src.AssignedApis));
CreateMap<ApiUpdateRequest, Api>()
    .ForMember(dest => dest.ApiKey, opt => opt.Ignore()); // Ignore mapping apiKey