NHibernate missing SqlParameter for overriden property - nhibernate

Question

I'm trying to implement table-per-hierarchy approach, using FluentNHibernate AutoMapping.
I have a base class and three child classes. The third child class overrides a couple of properties of the base class. Instances of first two child classes save fine, but when I try to save an instance of the third class with overridden properties I get
Invalid index 7 for this SqlParameterCollection with Count=7.
It seems NHibernate doesn't add SqlParamaters for overridden properties, but it tries to set a value.
How to fix that? Maybe some changes in mapping/configuration?
The StackTrace:
[IndexOutOfRangeException: Invalid index 7 for this SqlParameterCollection with Count=7.]
System.Data.SqlClient.SqlParameterCollection.RangeCheck(Int32 index) +5033831
System.Data.SqlClient.SqlParameterCollection.GetParameter(Int32 index) +21
System.Data.Common.DbParameterCollection.System.Collections.IList.get_Item(Int32 index) +10
NHibernate.Type.DateTimeType.Set(IDbCommand st, Object value, Int32 index) +74
NHibernate.Type.NullableType.NullSafeSet(IDbCommand cmd, Object value, Int32 index) +70
NHibernate.Type.NullableType.NullSafeSet(IDbCommand st, Object value, Int32 index, Boolean[] settable, ISessionImplementor session) +37
NHibernate.Persister.Entity.AbstractEntityPersister.Dehydrate(Object id, Object[] fields, Object rowId, Boolean[] includeProperty, Boolean[][] includeColumns, Int32 table, IDbCommand statement, ISessionImplementor session, Int32 index) +189
NHibernate.Persister.Entity.AbstractEntityPersister.Insert(Object id, Object[] fields, Boolean[] notNull, Int32 j, SqlCommandInfo sql, Object obj, ISessionImplementor session) +498
NHibernate.Persister.Entity.AbstractEntityPersister.Insert(Object id, Object[] fields, Object obj, ISessionImplementor session) +166
NHibernate.Action.EntityInsertAction.Execute() +181
NHibernate.Engine.ActionQueue.Execute(IExecutable executable) +42
NHibernate.Engine.ActionQueue.ExecuteActions(IList list) +59
NHibernate.Engine.ActionQueue.ExecuteActions() +16
NHibernate.Event.Default.AbstractFlushingEventListener.PerformExecutions(IEventSource session) +121
NHibernate.Event.Default.DefaultFlushEventListener.OnFlush(FlushEvent event) +92
NHibernate.Impl.SessionImpl.Flush() +291
MDT.Core.DataAccess.DbContext.Flush() in C:\dev\DHL\ISS\Common\MDT.Core\DataAccess\DbContext.cs:215
ISS.Web.Controllers.ReportScheduleController.Index() in C:\dev\DHL\ISS\ISS.Web\Controllers\ReportScheduleController.cs:55
lambda_method(Closure , ControllerBase , Object[] ) +62
System.Web.Mvc.ActionMethodDispatcher.Execute(ControllerBase controller, Object[] parameters) +17
System.Web.Mvc.ReflectedActionDescriptor.Execute(ControllerContext controllerContext, IDictionary`2 parameters) +208
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethod(ControllerContext controllerContext, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +27
System.Web.Mvc.<>c__DisplayClass15.<InvokeActionMethodWithFilters>b__12() +55
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +263
System.Web.Mvc.<>c__DisplayClass17.<InvokeActionMethodWithFilters>b__14() +19
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +263
System.Web.Mvc.<>c__DisplayClass17.<InvokeActionMethodWithFilters>b__14() +19
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +263
System.Web.Mvc.<>c__DisplayClass17.<InvokeActionMethodWithFilters>b__14() +19
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +263
System.Web.Mvc.<>c__DisplayClass17.<InvokeActionMethodWithFilters>b__14() +19
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodFilter(IActionFilter filter, ActionExecutingContext preContext, Func`1 continuation) +263
System.Web.Mvc.<>c__DisplayClass17.<InvokeActionMethodWithFilters>b__14() +19
System.Web.Mvc.ControllerActionInvoker.InvokeActionMethodWithFilters(ControllerContext controllerContext, IList`1 filters, ActionDescriptor actionDescriptor, IDictionary`2 parameters) +191
System.Web.Mvc.ControllerActionInvoker.InvokeAction(ControllerContext controllerContext, String actionName) +343
System.Web.Mvc.Controller.ExecuteCore() +116
System.Web.Mvc.ControllerBase.Execute(RequestContext requestContext) +97
System.Web.Mvc.ControllerBase.System.Web.Mvc.IController.Execute(RequestContext requestContext) +10
System.Web.Mvc.<>c__DisplayClassb.<BeginProcessRequest>b__5() +37
System.Web.Mvc.Async.<>c__DisplayClass1.<MakeVoidDelegate>b__0() +21
System.Web.Mvc.Async.<>c__DisplayClass8`1.<BeginSynchronous>b__7(IAsyncResult _) +12
System.Web.Mvc.Async.WrappedAsyncResult`1.End() +62
System.Web.Mvc.<>c__DisplayClasse.<EndProcessRequest>b__d() +50
System.Web.Mvc.SecurityUtil.<GetCallInAppTrustThunk>b__0(Action f) +7
System.Web.Mvc.SecurityUtil.ProcessInApplicationTrust(Action action) +22
System.Web.Mvc.MvcHandler.EndProcessRequest(IAsyncResult asyncResult) +60
System.Web.Mvc.MvcHandler.System.Web.IHttpAsyncHandler.EndProcessRequest(IAsyncResult result) +9
System.Web.CallHandlerExecutionStep.System.Web.HttpApplication.IExecutionStep.Execute() +8862381
System.Web.HttpApplication.ExecuteStep(IExecutionStep step, Boolean& completedSynchronously) +184

Answer 1

Yes, FluentNHibernate AutoMapping adds duplicate mapping for overridden properties.
It is strange that the code doesn't help
.Override<ThirdClass>(map => { map.IgnoreProperty(p => p.Age); })
So I have to use
.OverrideAll(map => map.IgnoreProperties(x => x.MemberInfo.HasAttribute<IgnoreMapAttribute>()))
and set [IgnoreMap] attribute in my class.