refactor: cr/dr note will be on single exchange rate

erpnext/accounts/doctype/journal_entry/journal_entry.py

@@ -768,18 +768,23 @@ class JournalEntry(AccountsController):
 				)
 			):
 
-				# Modified to include the posting date for which to retreive the exchange rate
-				d.exchange_rate = get_exchange_rate(
-					self.posting_date,
-					d.account,
-					d.account_currency,
-					self.company,
-					d.reference_type,
-					d.reference_name,
-					d.debit,
-					d.credit,
-					d.exchange_rate,
-				)
+				ignore_exchange_rate = False
+				if self.get("flags") and self.flags.get("ignore_exchange_rate"):
+					ignore_exchange_rate = True
+
+				if not ignore_exchange_rate:
+					# Modified to include the posting date for which to retreive the exchange rate
+					d.exchange_rate = get_exchange_rate(
+						self.posting_date,
+						d.account,
+						d.account_currency,
+						self.company,
+						d.reference_type,
+						d.reference_name,
+						d.debit,
+						d.credit,
+						d.exchange_rate,
+					)
 
 			if not d.exchange_rate:
 				frappe.throw(_("Row {0}: Exchange Rate is mandatory").format(d.idx))

erpnext/accounts/doctype/payment_reconciliation/payment_reconciliation.py

@@ -650,6 +650,7 @@ def reconcile_dr_cr_note(dr_cr_notes, company):
 						"reference_type": inv.against_voucher_type,
 						"reference_name": inv.against_voucher,
 						"cost_center": erpnext.get_default_cost_center(company),
+						"exchange_rate": inv.exchange_rate,
 					},
 					{
 						"account": inv.account,
@@ -663,13 +664,13 @@ def reconcile_dr_cr_note(dr_cr_notes, company):
 						"reference_type": inv.voucher_type,
 						"reference_name": inv.voucher_no,
 						"cost_center": erpnext.get_default_cost_center(company),
+						"exchange_rate": inv.exchange_rate,
 					},
 				],
 			}
 		)
 
-		if difference_entry := get_difference_row(inv):
-			jv.append("accounts", difference_entry)
-
 		jv.flags.ignore_mandatory = True
+		jv.flags.ignore_exchange_rate = True
 		jv.submit()
+		jv.make_exchange_gain_loss_journal(args=[inv])