diff --git a/buying/doctype/purchase_common/purchase_common.js b/buying/doctype/purchase_common/purchase_common.js
index b8346d38934..7775426eaa4 100644
--- a/buying/doctype/purchase_common/purchase_common.js
+++ b/buying/doctype/purchase_common/purchase_common.js
@@ -54,9 +54,6 @@ erpnext.buying.BuyingController = erpnext.utils.Controller.extend({
 	},
 	
 	price_list_name: function(callback_fn) {
-		this.frm.toggle_reqd(["price_list_currency", "plc_conversion_rate"],
-			!!(this.frm.doc.price_list_name));
-		
 		var me = this;
 		
 		if(this.frm.doc.price_list_name) {
@@ -137,6 +134,9 @@ erpnext.buying.BuyingController = erpnext.utils.Controller.extend({
 	},
 	
 	price_list_currency: function() {
+		this.frm.toggle_reqd("plc_conversion_rate",
+			!!(this.frm.doc.price_list_name && this.frm.doc.price_list_currency));
+		
 		this.set_dynamic_labels();
 				
 		if(this.frm.doc.price_list_currency === this.get_company_currency())
diff --git a/buying/utils.py b/buying/utils.py
index 9d125de24ab..0431e642cb7 100644
--- a/buying/utils.py
+++ b/buying/utils.py
@@ -53,7 +53,7 @@ def get_item_details(args):
 		"qty": 0,
 		"stock_uom": item.stock_uom,
 		"uom": item.stock_uom,
-		"conversion_factor": 1,
+		"conversion_factor": 1.0,
 		"warehouse": args.warehouse or item.default_warehouse,
 		"item_tax_rate": json.dumps(dict(([d.tax_type, d.tax_rate] for d in 
 			item_wrapper.doclist.get({"parentfield": "item_tax"})))),
diff --git a/controllers/buying_controller.py b/controllers/buying_controller.py
index c49bf2a929f..8b247ccd988 100644
--- a/controllers/buying_controller.py
+++ b/controllers/buying_controller.py
@@ -331,7 +331,12 @@ class BuyingController(AccountsController):
 	# update valuation rate
 	def update_valuation_rate(self, parentfield):
 		for d in self.doclist.get({"parentfield": parentfield}):
-			if d.qty:
+			d.conversion_factor = d.conversion_factor or webnotes.conn.get_value(
+				"UOM Conversion Detail", {"parent": d.item_code, "uom": d.uom}, 
+				"conversion_factor") or 1
+			if d.item_code and d.qty:
+				# if no item code, which is sometimes the case in purchase invoice, 
+				# then it is not possible to track valuation against it
 				d.valuation_rate = (flt(d.purchase_rate or d.rate)
 					+ (flt(d.item_tax_amount) + flt(d.rm_supp_cost)) / flt(d.qty)
 					) / flt(d.conversion_factor)
diff --git a/patches/march_2013/__init__.py b/patches/march_2013/__init__.py
new file mode 100644
index 00000000000..e69de29bb2d
diff --git a/patches/march_2013/update_po_prevdoc_doctype.py b/patches/march_2013/update_po_prevdoc_doctype.py
new file mode 100644
index 00000000000..35e7a257b4e
--- /dev/null
+++ b/patches/march_2013/update_po_prevdoc_doctype.py
@@ -0,0 +1,6 @@
+import webnotes
+def execute():
+	webnotes.conn.sql("""update `tabPurchase Order Item` set prevdoc_doctype = 'Material Request' 
+		where prevdoc_doctype = 'Purchase Request'""")
+	webnotes.conn.sql("""update `tabSupplier Quotation Item` 
+		set prevdoc_doctype = 'Material Request' where prevdoc_doctype = 'Purchase Request'""")
\ No newline at end of file
diff --git a/patches/patch_list.py b/patches/patch_list.py
index 9e5d6f69af0..50eb0cdd819 100644
--- a/patches/patch_list.py
+++ b/patches/patch_list.py
@@ -201,4 +201,5 @@ patch_list = [
 	'execute:webnotes.reload_doc("accounts", "Print Format", "Sales Invoice Spartan") # 2013-02-26',
 	"execute:(not webnotes.conn.exists('Role', 'Projects Manager')) and webnotes.doc({'doctype':'Role', 'role_name':'Projects Manager'}).insert()",
 	"patches.february_2013.p09_remove_cancelled_warehouses",
+	"patches.march_2013.update_po_prevdoc_doctype",
 ]
\ No newline at end of file
diff --git a/setup/utils.py b/setup/utils.py
index 1b61ea9201e..1a86921692e 100644
--- a/setup/utils.py
+++ b/setup/utils.py
@@ -40,7 +40,7 @@ def get_price_list_currency(args):
 	if isinstance(args, basestring):
 		args = json.loads(args)
 	
-	result = webnotes.conn.sql("""select ref_currency from `tabItem Price`
+	result = webnotes.conn.sql("""select distinct ref_currency from `tabItem Price`
 		where price_list_name=%s and `%s`=1""" % ("%s", args.get("use_for")),
 		(args.get("price_list_name"),))
 	if result and len(result)==1:
diff --git a/stock/doctype/batch/batch.txt b/stock/doctype/batch/batch.txt
index cad4a0db2c1..6a6de8b2476 100644
--- a/stock/doctype/batch/batch.txt
+++ b/stock/doctype/batch/batch.txt
@@ -1,15 +1,17 @@
 [
  {
-  "creation": "2013-01-10 16:34:25", 
+  "creation": "2013-03-01 08:21:54", 
   "docstatus": 0, 
-  "modified": "2013-01-29 13:40:32", 
+  "modified": "2013-03-01 08:22:16", 
   "modified_by": "Administrator", 
   "owner": "harshada@webnotestech.com"
  }, 
  {
+  "allow_attach": 1, 
   "autoname": "field:batch_id", 
   "doctype": "DocType", 
   "document_type": "Master", 
+  "max_attachments": 5, 
   "module": "Stock", 
   "name": "__common__"
  }, 
@@ -105,6 +107,15 @@
   "oldfieldtype": "Small Text", 
   "read_only": 1
  }, 
+ {
+  "doctype": "DocField", 
+  "fieldname": "file_list", 
+  "fieldtype": "Text", 
+  "hidden": 1, 
+  "label": "File List", 
+  "no_copy": 1, 
+  "print_hide": 1
+ }, 
  {
   "doctype": "DocPerm"
  }
diff --git a/stock/doctype/item/item.js b/stock/doctype/item/item.js
index 6c2c8826458..5b32a34c80c 100644
--- a/stock/doctype/item/item.js
+++ b/stock/doctype/item/item.js
@@ -22,13 +22,11 @@ cur_frm.cscript.refresh = function(doc) {
 
 	if ((!doc.__islocal) && (doc.is_stock_item == 'Yes')) {
 		var callback = function(r, rt) {
-			var enabled = (r.message == 'exists') ? false : true;				
+			var enabled = (r.message == 'exists') ? false : true;
 			cur_frm.toggle_enable(['has_serial_no', 'is_stock_item', 'valuation_method'], enabled);
 		}
 		$c_obj(make_doclist(doc.doctype, doc.name),'check_if_sle_exists','',callback);
 	}
-	
-	cur_frm.cscript.hide_website_fields(doc);
 }
 
 cur_frm.cscript.item_code = function(doc) {