Credit Check Rule Function Issue

Hi,

We define the Credit Check Rule with  the below Exposure

1. Include Open Receivable Balance

2. Include Payments at Risk

But when we Book the Sales order the order has been booked if the customer having Receipt at Risk.

Example

1. Receipt booking for Rs.100000 and this receipt is at Risk not cleared.

2. Book the sales order for Rs.50000, the order is Booked with Hold

3. Run the 'Credit Check Process"

4. The order has released from Credit Hold

any one have idea for this issue

Thanks in Advance

Mohan