diff --git a/api/tests/integration/test_vsp.py b/api/tests/integration/test_vsp.py
index 4ea505c..5b3670c 100644
--- a/api/tests/integration/test_vsp.py
+++ b/api/tests/integration/test_vsp.py
@@ -353,3 +353,82 @@ def test_vsp_update_past_close_date_deactivates(client, admin_tokens, auth_heade
     listing = client.get("/api/v1/dict/info", headers=auth_headers(admin_tokens))
     assert listing.status_code == 200
     assert vsp_id not in [item["id"] for item in listing.json()["result"]]
+
+
+def _put_vsp(client, admin_tokens, auth_headers, vsp_id, **body):
+    response = client.put(
+        f"/api/v1/dict/info/{vsp_id}", json=body, headers=auth_headers(admin_tokens),
+    )
+    assert response.status_code == 200, response.text
+    return response.json()["result"]
+
+
+def _closed_vsp(client, admin_tokens, auth_headers) -> int:
+    from datetime import date, timedelta
+
+    vsp_id = _create_vsp(client, admin_tokens, auth_headers, open_date="2020-01-01")
+    result = _put_vsp(
+        client, admin_tokens, auth_headers, vsp_id,
+        close_date=(date.today() - timedelta(days=1)).isoformat(),
+    )
+    assert result["is_active"] is False
+    return vsp_id
+
+
+def test_vsp_update_clear_close_date_reopens(client, admin_tokens, auth_headers):
+    vsp_id = _closed_vsp(client, admin_tokens, auth_headers)
+
+    result = _put_vsp(client, admin_tokens, auth_headers, vsp_id, close_date=None)
+
+    assert result["close_date"] is None
+    assert result["is_active"] is True
+    listing = client.get("/api/v1/dict/info", headers=auth_headers(admin_tokens))
+    assert vsp_id in [item["id"] for item in listing.json()["result"]]
+
+
+def test_vsp_update_future_close_date_reopens(client, admin_tokens, auth_headers):
+    from datetime import date, timedelta
+
+    vsp_id = _closed_vsp(client, admin_tokens, auth_headers)
+    future = (date.today() + timedelta(days=30)).isoformat()
+
+    result = _put_vsp(client, admin_tokens, auth_headers, vsp_id, close_date=future)
+
+    assert result["close_date"] == future
+    assert result["is_active"] is True
+
+
+def test_vsp_update_without_close_date_keeps_it(client, admin_tokens, auth_headers):
+    from datetime import date, timedelta
+
+    vsp_id = _closed_vsp(client, admin_tokens, auth_headers)
+    yesterday = (date.today() - timedelta(days=1)).isoformat()
+
+    result = _put_vsp(client, admin_tokens, auth_headers, vsp_id, address="AURORA-1886 new")
+
+    assert result["close_date"] == yesterday
+    assert result["is_active"] is False
+
+
+def test_vsp_clear_close_date_is_audited(client, admin_tokens, auth_headers, db_session):
+    from sqlalchemy import text
+
+    vsp_id = _closed_vsp(client, admin_tokens, auth_headers)
+    _put_vsp(client, admin_tokens, auth_headers, vsp_id, close_date=None)
+
+    async def _last_changes():
+        row = (
+            await db_session.execute(
+                text(
+                    "SELECT event_data->'changes' FROM v3.audit_log "
+                    "WHERE event = 'VSP_UPDATE' AND (event_data->>'vsp_id')::int = :id "
+                    "ORDER BY id DESC LIMIT 1"
+                ),
+                {"id": vsp_id},
+            )
+        ).first()
+        return row[0]
+
+    changes = client.portal.call(_last_changes)
+    assert changes["closed_at"]["before"] is not None
+    assert changes["closed_at"]["after"] is None
diff --git a/api/tests/unit/test_vsp_service_close_date.py b/api/tests/unit/test_vsp_service_close_date.py
index e29814b..1de3674 100644
--- a/api/tests/unit/test_vsp_service_close_date.py
+++ b/api/tests/unit/test_vsp_service_close_date.py
@@ -34,7 +34,7 @@ async def test_update_past_close_date_sets_inactive():
     assert data["is_active"] is False
 
 
-async def test_update_future_close_date_keeps_active_key_absent():
+async def test_update_future_close_date_sets_active():
     vsp = MagicMock(closed_at=None)
     service = _service(vsp)
     payload = VSPUpdate(close_date=date.today() + timedelta(days=30))
@@ -42,4 +42,16 @@ async def test_update_future_close_date_keeps_active_key_absent():
     await service.update(vsp_id=1, payload=payload, user=_admin())
 
     data = service.vsp_repo.update.await_args.kwargs["data"]
-    assert "is_active" not in data
+    assert data["is_active"] is True
+
+
+async def test_update_null_close_date_sets_active():
+    vsp = MagicMock(closed_at=date.today() - timedelta(days=1))
+    service = _service(vsp)
+    payload = VSPUpdate(close_date=None)
+
+    await service.update(vsp_id=1, payload=payload, user=_admin())
+
+    data = service.vsp_repo.update.await_args.kwargs["data"]
+    assert data["closed_at"] is None
+    assert data["is_active"] is True