diff --git a/erpnext/accounts/DocType Mapper/Delivery Note-Receivable Voucher/Delivery Note-Receivable Voucher.txt b/erpnext/accounts/DocType Mapper/Delivery Note-Receivable Voucher/Delivery Note-Receivable Voucher.txt
index 9ed756f..185af99 100644
--- a/erpnext/accounts/DocType Mapper/Delivery Note-Receivable Voucher/Delivery Note-Receivable Voucher.txt
+++ b/erpnext/accounts/DocType Mapper/Delivery Note-Receivable Voucher/Delivery Note-Receivable Voucher.txt
@@ -134,6 +134,16 @@
 		'to_field': 'serial_no'
 	},
 
+	# Field Mapper Detail
+	{
+		'checking_operator': u'=',
+		'doctype': u'Field Mapper Detail',
+		'from_field': u'export_rate',
+		'map': u'Yes',
+		'match_id': 1,
+		'to_field': u'export_rate'
+	},
+
 	# Table Mapper Detail
 	{
 		'doctype': 'Table Mapper Detail',
@@ -186,4 +196,4 @@
 		'to_table': 'Sales Team',
 		'validation_logic': 'name is not null'
 	}
-]
\ No newline at end of file
+]
diff --git a/erpnext/accounts/DocType Mapper/Sales Order-Receivable Voucher/Sales Order-Receivable Voucher.txt b/erpnext/accounts/DocType Mapper/Sales Order-Receivable Voucher/Sales Order-Receivable Voucher.txt
index 630fb15..fb180ff 100644
--- a/erpnext/accounts/DocType Mapper/Sales Order-Receivable Voucher/Sales Order-Receivable Voucher.txt
+++ b/erpnext/accounts/DocType Mapper/Sales Order-Receivable Voucher/Sales Order-Receivable Voucher.txt
@@ -136,6 +136,16 @@
 		'to_field': 'incentives'
 	},
 
+	# Field Mapper Detail
+	{
+		'checking_operator': u'=',
+		'doctype': u'Field Mapper Detail',
+		'from_field': u'export_rate',
+		'map': u'Yes',
+		'match_id': 1,
+		'to_field': u'export_rate'
+	},
+
 	# Table Mapper Detail
 	{
 		'doctype': 'Table Mapper Detail',
@@ -188,4 +198,4 @@
 		'to_table': 'Sales Team',
 		'validation_logic': 'name is not null'
 	}
-]
\ No newline at end of file
+]
diff --git a/erpnext/patches/jan_mar_2012/reload_mapper.py b/erpnext/patches/jan_mar_2012/reload_mapper.py
new file mode 100644
index 0000000..3a43d87
--- /dev/null
+++ b/erpnext/patches/jan_mar_2012/reload_mapper.py
@@ -0,0 +1,7 @@
+def execute():
+	import webnotes
+	from webnotes.modules.module_manager import reload_doc
+
+	reload_doc('stock', 'DocType Mapper', 'Sales Order-Delivery Note')
+	reload_doc('accounts', 'DocType Mapper', 'Sales Order-Receivable Voucher')
+	reload_doc('accounts', 'DocType Mapper', 'Delivery Note-Receivable Voucher')
diff --git a/erpnext/patches/patch_list.py b/erpnext/patches/patch_list.py
index 3bf4b6a..247f5d8 100644
--- a/erpnext/patches/patch_list.py
+++ b/erpnext/patches/patch_list.py
@@ -207,5 +207,10 @@
 		'patch_file': 'update_se_fld_options',
 		'description': 'Purpose SE: Others to Other' 
 	},
+	{
+		'patch_module': 'patches.jan_mar_2012',
+		'patch_file': 'reload_mapper',
+		'description': 'SO-DN, SO-Rv, DN-RV'
+	},
 
 ]
diff --git a/erpnext/stock/DocType Mapper/Sales Order-Delivery Note/Sales Order-Delivery Note.txt b/erpnext/stock/DocType Mapper/Sales Order-Delivery Note/Sales Order-Delivery Note.txt
index fcadcd4..43e800f 100644
--- a/erpnext/stock/DocType Mapper/Sales Order-Delivery Note/Sales Order-Delivery Note.txt
+++ b/erpnext/stock/DocType Mapper/Sales Order-Delivery Note/Sales Order-Delivery Note.txt
@@ -131,10 +131,10 @@
 	{
 		'checking_operator': u'=',
 		'doctype': u'Field Mapper Detail',
-		'from_field': u'basic_rate',
+		'from_field': u'export_rate',
 		'map': u'Yes',
 		'match_id': 1,
-		'to_field': u'basic_rate'
+		'to_field': u'export_rate'
 	},
 
 	# Field Mapper Detail
@@ -264,4 +264,4 @@
 		'to_table': u'Delivery Note',
 		'validation_logic': u'docstatus = 1'
 	}
-]
\ No newline at end of file
+]