Export throws null reference when attempting to update a deleted entity

System.Exception: Error occurred when attempting to save entity with distinguished name

CN=100001

Error:

Object reference not set to an instance of an object.
at Unify.Product.IdentityBroker.AdapterEntityExtensions.<>c_DisplayClass1.<ApplyChangesToAdapterEntity>b_0(KeyValuePair`2 item)
at Unify.Framework.Visitor.<>c_DisplayClass1`1.<Visit>b_0(T item, Int32 index)
at Unify.Framework.Visitor.VisitT(IEnumerable`1 visitCollection, Action`2 visitor)
at Unify.Product.IdentityBroker.AdapterEntityExtensions.ApplyChangesToAdapterEntity(IAdapterEntity adapterEntity, IAdapterEntitySaveBase adapterEntitySaveChange, Boolean removeCurrentValues)
at Unify.Product.IdentityBroker.LDIFAdapterBase.ExportChanges(ExportedLDIFForAdapter exportedLdifForAdapter)
at SyncInvokeExportChanges(Object , Object[] , Object[] )
at System.ServiceModel.Dispatcher.SyncMethodInvoker.Invoke(Object instance, Object[] inputs, Object[]& outputs)
at System.ServiceModel.Dispatcher.DispatchOperationRuntime.InvokeBegin(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage5(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.ImmutableDispatchRuntime.ProcessMessage31(MessageRpc& rpc)
at System.ServiceModel.Dispatcher.MessageRpc.Process(Boolean isOperationContextSet)
at Unify.Product.IdentityBroker.IdentityBrokerManagementAgentProxy.ExportEntry(ModificationType modificationType, String[] changedAttributes, CSEntry csentry)
at Unify.Product.IdentityBroker.IdentityBrokerManagementAgent.ExportEntry(ModificationType modificationType, String[] changedAttributes, CSEntry csentry)