For base amount category, only one preferred list on trade would be enough.

git-svn-id: https://svn.erp5.org/repos/public/erp5/trunk@35524 20353a03-c40f-0410-a6d1-a30d3c3de9de

product/ERP5/PropertySheet/TradePreference.py

@@ -72,15 +72,8 @@ class TradePreference:
       'mode'        : '' },
 
     # base_amount
-    { 'id'          : 'preferred_sale_base_amount',
-      'description' : 'Uses of base amounts that are sold',
-      'type'        : 'lines',
-      'preference'  : 1,
-      'default'     : [],
-      'write_permission': 'Manage properties',
-      'mode'        : '' },
-    { 'id'          : 'preferred_purchase_base_amount',
-      'description' : 'Uses of base amounts that are purchased',
+    { 'id'          : 'preferred_trade_base_amount',
+      'description' : 'Uses of base amounts for trade',
       'type'        : 'lines',
       'preference'  : 1,
       'default'     : [],