diff --git a/erpnext/__init__.py b/erpnext/__init__.py
index 706a8e5..7ec8430 100644
--- a/erpnext/__init__.py
+++ b/erpnext/__init__.py
@@ -2,7 +2,7 @@
 from __future__ import unicode_literals
 import frappe
 
-__version__ = '7.2.19'
+__version__ = '7.2.20'
 
 def get_default_company(user=None):
 	'''Get default company for user'''
diff --git a/erpnext/accounts/doctype/payment_entry/payment_entry.js b/erpnext/accounts/doctype/payment_entry/payment_entry.js
index d3dbd31..1bbe200 100644
--- a/erpnext/accounts/doctype/payment_entry/payment_entry.js
+++ b/erpnext/accounts/doctype/payment_entry/payment_entry.js
@@ -79,8 +79,13 @@
 		frm.events.show_general_ledger(frm);
 	},
 
+	company: function(frm) {
+		frm.events.hide_unhide_fields(frm);
+		frm.events.set_dynamic_labels(frm);
+	},
+
 	hide_unhide_fields: function(frm) {
-		var company_currency = frappe.get_doc(":Company", frm.doc.company).default_currency;
+		var company_currency = frm.doc.company? frappe.get_doc(":Company", frm.doc.company).default_currency: "";
 
 		frm.toggle_display("source_exchange_rate",
 			(frm.doc.paid_amount && frm.doc.paid_from_account_currency != company_currency));
@@ -118,7 +123,7 @@
 	},
 
 	set_dynamic_labels: function(frm) {
-		var company_currency = frappe.get_doc(":Company", frm.doc.company).default_currency;
+		var company_currency = frm.doc.company? frappe.get_doc(":Company", frm.doc.company).default_currency: "";
 
 		frm.set_currency_labels(["base_paid_amount", "base_received_amount", "base_total_allocated_amount",
 			"difference_amount"], company_currency);
@@ -131,6 +136,10 @@
 
 		frm.set_currency_labels(["total_allocated_amount", "unallocated_amount"], party_account_currency);
 
+		var currency_field = (frm.doc.payment_type=="Receive") ? "paid_from_account_currency" : "paid_to_account_currency"
+		frm.set_df_property("total_allocated_amount", "options", currency_field);
+		frm.set_df_property("unallocated_amount", "options", currency_field);
+
 		frm.set_currency_labels(["total_amount", "outstanding_amount", "allocated_amount"],
 			party_account_currency, "references");
 
@@ -741,4 +750,4 @@
 	deductions_remove: function(frm) {
 		frm.events.set_difference_amount(frm);
 	}
-})
\ No newline at end of file
+})
diff --git a/erpnext/stock/doctype/item/item.py b/erpnext/stock/doctype/item/item.py
index 53faa43..d20ba49 100644
--- a/erpnext/stock/doctype/item/item.py
+++ b/erpnext/stock/doctype/item/item.py
@@ -451,24 +451,32 @@
 				"valuation_method", "has_batch_no", "is_fixed_asset")
 
 			vals = frappe.db.get_value("Item", self.name, to_check, as_dict=True)
+			if not vals.get('valuation_method') and self.get('valuation_method'):
+				vals['valuation_method'] = frappe.db.get_single_value("Stock Settings", "valuation_method") or "FIFO"
 
 			if vals:
 				for key in to_check:
-					if self.get(key) != vals.get(key):
-						if not self.check_if_linked_document_exists():
+					if cstr(self.get(key)) != cstr(vals.get(key)):
+						if not self.check_if_linked_document_exists(key):
 							break # no linked document, allowed
 						else:
-							frappe.throw(_("As there are existing transactions for this item, you can not change the value of {0}").format(frappe.bold(self.meta.get_label(key))))
+							frappe.throw(_("As there are existing transactions against item {0}, you can not change the value of {1}").format(self.name, frappe.bold(self.meta.get_label(key))))
 
 			if vals and not self.is_fixed_asset and self.is_fixed_asset != vals.is_fixed_asset:
 				asset = frappe.db.get_all("Asset", filters={"item_code": self.name, "docstatus": 1}, limit=1)
 				if asset:
 					frappe.throw(_('"Is Fixed Asset" cannot be unchecked, as Asset record exists against the item'))
 
-	def check_if_linked_document_exists(self):
-		for doctype in ("Sales Order Item", "Delivery Note Item", "Sales Invoice Item",
-			"Material Request Item", "Purchase Order Item", "Purchase Receipt Item",
-			"Purchase Invoice Item", "Stock Entry Detail", "Stock Reconciliation Item"):
+	def check_if_linked_document_exists(self, key):
+		linked_doctypes = ["Delivery Note Item", "Sales Invoice Item", "Purchase Receipt Item",
+			"Purchase Invoice Item", "Stock Entry Detail", "Stock Reconciliation Item"]
+			
+		# For "Is Stock Item", following doctypes is important 
+		# because reserved_qty, ordered_qty and requested_qty updated from these doctypes
+		if key == "is_stock_item":
+			linked_doctypes += ["Sales Order Item", "Purchase Order Item", "Material Request Item"]
+			
+		for doctype in linked_doctypes:
 			if frappe.db.get_value(doctype, filters={"item_code": self.name, "docstatus": 1}) or \
 				frappe.db.get_value("Production Order",
 					filters={"production_item": self.name, "docstatus": 1}):
diff --git a/erpnext/templates/generators/job_opening.html b/erpnext/templates/generators/job_opening.html
index 5998e3f..f92e72e 100644
--- a/erpnext/templates/generators/job_opening.html
+++ b/erpnext/templates/generators/job_opening.html
@@ -15,7 +15,7 @@
 {% endif %}
 <p style='margin-top: 30px'>
 	<a class='btn btn-primary'
-	href='/job_application?job_title={{ doc.name }}'>
+	href='/job_application?new=1&job_title={{ doc.name }}'>
 	{{ _("Apply Now") }}</a>
 </p>