Merge pull request #1558 from frappe/mergify/bp/version-15-hotfix/pr-…

…1553

fix: don't update exchange rate for all references (backport #1553)

hrms/overrides/employee_payment_entry.py

@@ -44,7 +44,8 @@ def set_missing_ref_details(
 					d.reference_doctype, d.reference_name, self.party_account_currency
 				)
 
-				if ref_exchange_rate:
+				# Only update exchange rate when the reference is Journal Entry
+				if ref_exchange_rate and d.reference_doctype == "Journal Entry":
 					ref_details.update({"exchange_rate": ref_exchange_rate})
 
 				for field, value in ref_details.items():