fix: add regional support to extend purchase gl entries
diff --git a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
index 2433268..e8fc445 100644
--- a/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
+++ b/erpnext/accounts/doctype/purchase_invoice/purchase_invoice.py
@@ -1066,7 +1066,7 @@
 								"debit_in_account_currency": (
 									base_asset_amount if cwip_account_currency == self.company_currency else asset_amount
 								),
-								"cost_center": self.cost_center,
+								"cost_center": item.cost_center or self.cost_center,
 								"project": item.project or self.project,
 							},
 							item=item,
diff --git a/erpnext/controllers/stock_controller.py b/erpnext/controllers/stock_controller.py
index ae54b80..9eeffd8 100644
--- a/erpnext/controllers/stock_controller.py
+++ b/erpnext/controllers/stock_controller.py
@@ -76,6 +76,7 @@
 		elif self.doctype in ["Purchase Receipt", "Purchase Invoice"] and self.docstatus == 1:
 			gl_entries = []
 			gl_entries = self.get_asset_gl_entry(gl_entries)
+			update_regional_gl_entries(gl_entries, self)
 			make_gl_entries(gl_entries, from_repost=from_repost)
 
 	def validate_serialized_batch(self):
@@ -855,8 +856,9 @@
 
 @frappe.whitelist()
 def show_accounting_ledger_preview(company, doctype, docname):
-	filters = {"company": company, "include_dimensions": 1}
+	filters = frappe._dict(company=company, include_dimensions=1)
 	doc = frappe.get_doc(doctype, docname)
+	doc.run_method("before_gl_preview")
 
 	gl_columns, gl_data = get_accounting_ledger_preview(doc, filters)
 
@@ -867,8 +869,9 @@
 
 @frappe.whitelist()
 def show_stock_ledger_preview(company, doctype, docname):
-	filters = {"company": company}
+	filters = frappe._dict(company=company)
 	doc = frappe.get_doc(doctype, docname)
+	doc.run_method("before_sl_preview")
 
 	sl_columns, sl_data = get_stock_ledger_preview(doc, filters)
 
@@ -1216,3 +1219,8 @@
 		repost_entries.append(repost_entry)
 
 	return repost_entries
+
+
+@erpnext.allow_regional
+def update_regional_gl_entries(gl_list, doc):
+	return
diff --git a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
index de0db1a..662ab6d 100644
--- a/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
+++ b/erpnext/stock/doctype/purchase_receipt/purchase_receipt.py
@@ -314,6 +314,7 @@
 		self.make_item_gl_entries(gl_entries, warehouse_account=warehouse_account)
 		self.make_tax_gl_entries(gl_entries)
 		self.get_asset_gl_entry(gl_entries)
+		update_regional_gl_entries(gl_entries, self)
 
 		return process_gl_map(gl_entries)
 
@@ -827,8 +828,6 @@
 			pr_doc = self if (pr == self.name) else frappe.get_doc("Purchase Receipt", pr)
 			update_billing_percentage(pr_doc, update_modified=update_modified)
 
-		self.load_from_db()
-
 
 def update_billed_amount_based_on_po(po_details, update_modified=True):
 	po_billed_amt_details = get_billed_amount_against_po(po_details)
@@ -941,9 +940,6 @@
 
 
 def update_billing_percentage(pr_doc, update_modified=True, adjust_incoming_rate=False):
-	# Reload as billed amount was set in db directly
-	pr_doc.load_from_db()
-
 	# Update Billing % based on pending accepted qty
 	total_amount, total_billed_amount = 0, 0
 	item_wise_returned_qty = get_item_wise_returned_qty(pr_doc)
@@ -969,7 +965,6 @@
 
 	percent_billed = round(100 * (total_billed_amount / (total_amount or 1)), 6)
 	pr_doc.db_set("per_billed", percent_billed)
-	pr_doc.load_from_db()
 
 	if update_modified:
 		pr_doc.set_status(update=True)
@@ -1255,3 +1250,8 @@
 
 def on_doctype_update():
 	frappe.db.add_index("Purchase Receipt", ["supplier", "is_return", "return_against"])
+
+
+@erpnext.allow_regional
+def update_regional_gl_entries(gl_list, doc):
+	return