Hi Rachid (sorry, I can't comment your post, as I need 50 karma points to do so),
I'm aware of the default sequence number, and that you can change it in sales.py file...or through a module. I'm also aware that you can reorder the lines by dragging and dropping them manually after they've been messed up. But what I don't understand is why the lines don't stay in the order I've added them by default.
For example, I add:
Line 1
Line 2
Line 3
I expect it to stay as:
Line 1
Line 2
Line 3
and not as this, which is the actual behaviour:
Line 1
Line 3
Line 2
There doesn't seem to be much logic behind this default behaviour.
So far I haven't found many posts complaining about this issue, so I'm starting to suspect it might be a behaviour specific to my OpenERP installation. Is anyone else facing this issue (line order being messed upon save or update of the order/invoice/picking)?