LINQ - чтобы получить правильные данные:

Question

Требуется получить MovementData на основе Типа суммы

• , если AmountType.Reserve, тогда MovementData должен быть получен на основе LatestReserveDate
• , если AmountType.RecoveryReserve, то MovementData должен показатьданные на основе LatestRecoveryReserveDate

Примечание. На данный момент я получаю данные движения на основе LatestRecoveryreserveDate вместо LatestReserveDate, что неверно.

foreach (var keys in itemsDict)
{
    CurrentFinancialMovementData movementData = 
        keys.OrderByDescending(s => s.LatestReserveDate ?? s.LatestRecoveryReserveDate)
            .ThenByDescending(x => x.ReserveDaySequence)
            .First();
    CurrentFinancialMovementData movementDataReserve = 
        keys.Where(s => s.AmountType == (short)StaticValues.AmountType.Reserve)
        .OrderByDescending(a => a.LatestReserveDate)
        .ThenByDescending(x => x.ReserveDaySequence)
        .FirstOrDefault();
    CurrentFinancialMovementData movementDataRecoveryReserve = 
        keys.Where(s => s.AmountType == (short)StaticValues.AmountType.RecoveryReserve)
        .OrderByDescending(a => a.LatestRecoveryReserveDate)
        .ThenByDescending(x => x.ReserveDaySequence)
        .FirstOrDefault();

    foreach (var item in keys)
    {
        if (item.ClaimTransactionSourceCode == (short)StaticValues.ClaimTransactionSource.Reserve ||
            item.ClaimTransactionSourceCode == (short)StaticValues.ClaimTransactionSource.Payment ||
            item.ClaimTransactionSourceCode == (short)StaticValues.ClaimTransactionSource.PaymentCancellation)
        {
            if (item.MovementAmount.HasValue)
            {
                movementData.CurrentIncurred = movementData.CurrentIncurred.GetValueOrDefault() 
                                               + item.MovementAmount.GetValueOrDefault();
            }

            if (item.AmountType == (short)StaticValues.AmountType.Reserve)
            {
                if (item.MovementAmount.HasValue)
                {
                    movementData.CurrentReserve = movementDataReserve.CurrentReserve.GetValueOrDefault() 
                                                  + item.MovementAmount.GetValueOrDefault();
                    movementData.LatestReserveDate = movementDataReserve.LatestReserveDate;
                }
            }
            else
            {
                if (item.TransactionAmount.HasValue)
                {
                    movementData.CurrentPayments = movementData.CurrentPayments.GetValueOrDefault() 
                                                   + item.TransactionAmount.GetValueOrDefault();
                }
            }
        }

        if (item.ClaimTransactionSourceCode == (short)StaticValues.ClaimTransactionSource.RecoveryReserve ||
            item.ClaimTransactionSourceCode == (short)StaticValues.ClaimTransactionSource.RecoveryReceipt)
        {
            if (item.MovementAmount.HasValue)
            {
                movementData.CurrentRecovery = movementData.CurrentRecovery.GetValueOrDefault() 
                                               + item.MovementAmount.GetValueOrDefault();
            }

            if (item.AmountType == (short)StaticValues.AmountType.RecoveryReserve)
            {
                if (item.MovementAmount.HasValue)
                {
                    movementData.CurrentRecoveryReserve = movementDataRecoveryReserve.CurrentRecoveryReserve.GetValueOrDefault() 
                                                          + item.MovementAmount.GetValueOrDefault();
                    movementData.LatestRecoveryReserveDate = movementDataRecoveryReserve.LatestRecoveryReserveDate;
                }
            }
            else
            {
                if (item.TransactionAmount.HasValue)
                {
                    movementData.CurrentReceipts = movementData.CurrentReceipts.GetValueOrDefault() 
                                                   + item.TransactionAmount.GetValueOrDefault();
                }
            }
        }
    }
}