diff --git a/api/tests/integration/test_heavy_get_json.py b/api/tests/integration/test_heavy_get_json.py
index 612acaf..aa63a28 100644
--- a/api/tests/integration/test_heavy_get_json.py
+++ b/api/tests/integration/test_heavy_get_json.py
@@ -61,6 +61,19 @@ def _strip_nulls(value):
     return value
 
 
+def test_pg_jsonb_strip_nulls_matches_strip_nulls(client, db_session):
+    literal = '{"a":{"b":null},"c":[null,{"d":null,"e":1},[{"f":null}]],"g":null,"h":{}}'
+
+    async def _go():
+        res = await db_session.execute(text("SELECT jsonb_strip_nulls(CAST(:v AS jsonb))"), {"v": literal})
+        return res.scalar_one()
+    pg = client.portal.call(_go)
+    if isinstance(pg, str):
+        pg = json.loads(pg)
+    assert pg == _strip_nulls(json.loads(literal))
+    assert pg == {"a": {}, "c": [None, {"e": 1}, [{}]], "h": {}}
+
+
 def _has_null_field(value) -> bool:
     if isinstance(value, dict):
         return any(v is None or _has_null_field(v) for v in value.values())
diff --git a/web/src/components/RealtimeTable/utils/cellUtils.test.js b/web/src/components/RealtimeTable/utils/cellUtils.test.js
index a7f849e..92bc357 100644
--- a/web/src/components/RealtimeTable/utils/cellUtils.test.js
+++ b/web/src/components/RealtimeTable/utils/cellUtils.test.js
@@ -229,3 +229,19 @@ test('AURORA-1848: отсутствующий скалярный ключ вер
 	const out = updateCells(data, [['INPUT', 3, 1, { line_id: 9 }]]);
 	assert.equal(out[0].data.line_id, 9);
 });
+
+test('AURORA-1848: блок отсутствует на двух уровнях вглубь — создаётся цепочка, вход не меняется', () => {
+	const data = deepFreeze([row({ line_id: 7 })]);
+	const out = updateCells(data, [['INPUT', 3, 1, { plan: { support: { q1: 5 } } }]]);
+	assert.equal(out[0].data.plan.support.q1, 5);
+	assert.deepEqual(data[0].data, { line_id: 7 });
+});
+
+test('AURORA-1848: два обновления одной строки в одном батче складываются', () => {
+	const data = deepFreeze([row({ line_id: 7 })]);
+	const out = updateCells(data, [
+		['INPUT', 3, 1, { q1: { m1: 5 } }],
+		['INPUT', 3, 1, { q1: { m2: 3 } }],
+	]);
+	assert.deepEqual(out[0].data.q1, { m1: 5, m2: 3 });
+});
diff --git a/web/src/components/RealtimeTable/utils/rowUtils.js b/web/src/components/RealtimeTable/utils/rowUtils.js
index af5efcb..cc3ce5d 100644
--- a/web/src/components/RealtimeTable/utils/rowUtils.js
+++ b/web/src/components/RealtimeTable/utils/rowUtils.js
@@ -30,7 +30,7 @@ export function buildRowHierarchy(items, mapItem = (item) => item) {
 }
 
 export function getDataRowId(data) {
-	return data?.id || data?.line_id;
+	return data?.id || data?.line_id || null;
 }
 
 export function getRowId(row) {
diff --git a/web/src/components/RealtimeTable/utils/rowUtils.test.js b/web/src/components/RealtimeTable/utils/rowUtils.test.js
index 0c40434..7d45956 100644
--- a/web/src/components/RealtimeTable/utils/rowUtils.test.js
+++ b/web/src/components/RealtimeTable/utils/rowUtils.test.js
@@ -1,6 +1,6 @@
 import assert from 'node:assert/strict';
 import test from 'node:test';
-import { buildRowHierarchy } from './rowUtils.js';
+import { buildRowHierarchy, getDataRowId } from './rowUtils.js';
 
 test('row hierarchy uses row types when depth skips a level and keeps INPUT rows as siblings', () => {
 	const rows = [
@@ -19,3 +19,10 @@ test('row hierarchy uses row types when depth skips a level and keeps INPUT rows
 	assert.deepEqual(tree[0].subRows[0].subRows.map(({ id }) => id), ['input-1', 'input-2']);
 	assert.deepEqual(tree[0].subRows[0].subRows[0].subRows, []);
 });
+
+test('AURORA-1848: getDataRowId без id и line_id возвращает null и сериализуется в row_id:null', () => {
+	assert.equal(getDataRowId({ header: {} }), null);
+	assert.equal(getDataRowId({ id: 5 }), 5);
+	assert.equal(getDataRowId({ line_id: 7 }), 7);
+	assert.ok(JSON.stringify({ row_id: getDataRowId({ header: {} }) }).includes('"row_id":null'));
+});