Wrong Prioritization of OpenERP v6.1 Procurement

Hi OpenERP Addons Team,

I think the prioritization of OpenERP v6.1 procurement is wrong because the procurement sorts the list according to Priority and decreasing Scheduled Date. Moreover, it affects the automatic allocation/reservation of products in Delivery Orders with Waiting Availability state when using mrp scheduler.

Example, default sorting of OpenERP procurement:
1st - Priority: Not Urgent (0), Scheduled Date: June 20, 2012
2nd - Priority: Normal (1), Scheduled Date: June 24, 2012
3rd - Priority: Normal (1), Scheduled Date: June 21, 2012
4th - Priority: Normal (1), Scheduled Date: June 20, 2012
5th - Priority: Very Urgent (3), Scheduled Date: June 20, 2012

The order should be (desc priority, schedule date):
1st - Priority: Very Urgent (3), Scheduled Date: June 20, 2012
2nd - Priority: Normal (1), Scheduled Date: June 20, 2012
3rd - Priority: Normal (1), Scheduled Date: June 21, 2012
4th - Priority: Normal (1), Scheduled Date: June 24, 2012
5th - Priority: Not Urgent (0), Scheduled Date: June 20, 2012

or it should be (schedule date, desc priority):
1st - Priority: Very Urgent (3), Scheduled Date: June 20, 2012
2nd - Priority: Normal (1), Scheduled Date: June 20, 2012
3rd - Priority: Not Urgent (0), Scheduled Date: June 20, 2012
4th - Priority: Normal (1), Scheduled Date: June 21, 2012
5th - Priority: Normal (1), Scheduled Date: June 24, 2012