Sorting order of entries in a prompt

Hello,

We're on BIP 4.1 SP6 P2, DS 1.5 SP1 P2.

We have a BEX query with a variable on a navigational attribute (Nav Year).

When the user display the list of values in the prompt, they are ordered randomly ... :

We tried to sort on the query itself, in the initial view of the datasource etc ... nothing happens.

Even more disturbing: The member display have no influence. If we displayed Navyear as key, the prompt displays it as text+key.

The same behavior happens:

• In local and BIP mode
• Both in 1.5 and 1.6

Any thoughts ... ?

Thank you !