Blanket Order details

Hi All,

On Blanket Order we can check Posted Unposted Shipments, Invoices etc. In one of my client's database it was maintaining perfectly till last month. But now even if all quantity is invoiced system not updating field Qty. To Ship, also Posted Invoices are not linked to the Line-Posted Lines-Invoices. If I filter Blanket Order No. in Sales Inv. Line table I get the data. No changes at code level, is there any linking setup need to check?

Thanks.