S_ALR_87012993 drill down to KOB1

Hi to all,

in our system S4/Hana 755 (S4CORE release 105, SP 6) we are experiecing a problem with transaction S_ALR_87012993 and drill down to actual costs.

When I launch the S_ALR_87012993 report for a single internal order, then I double click on "Effective" column and select "Orders: Actual Line Items" report, it executes the KOB1 transaction, but after a very very long time it shows the result for ALL internal orders and not for the only one selected ... 

I try to detach the KOB1 report, re-attach it and re-generate, but didn't resolved the issue ...

Can anyone help me ?

Thanks in advance 

Andrea