Address review feedback: remove verbose comment and simplify release note

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>

Author: 2 people

packages/loot-core/src/shared/transactions.ts

@@ -262,12 +262,6 @@ export function updateTransaction(
 ) {
   return replaceTransactions(transactions, transaction.id, trans => {
     if (trans.is_parent) {
-      // When updating the parent, merge the incoming fields with the
-      // existing transaction so that properties like `amount`, `account`,
-      // and `date` are preserved.  A partial update (e.g. only setting
-      // `notes`) must not discard existing values – otherwise
-      // `recalculateSplit` sees `amount` as 0 and sets a
-      // SplitTransactionError.
       const parent =
         trans.id === transaction.id ? { ...trans, ...transaction } : trans;
       const originalSubtransactions =

upcoming-release-notes/7242.md

@@ -3,4 +3,4 @@ category: Bugfixes
 authors: [lwarrenthompson]
 ---
 
-Fix `api.updateTransaction()` corrupting split parent transactions when doing partial updates (e.g. only updating `notes`). Previously this would set a `SplitTransactionError` and could create zero-amount child rows.
+Fix `api.updateTransaction()` corrupting split parent transactions when doing partial updates