diff --git a/routes/log.js b/routes/log.js
index 3102f1d..eb1c42c 100644
--- a/routes/log.js
+++ b/routes/log.js
@@ -49,7 +49,11 @@ module.exports = function(pool) {
             await client.query(`DELETE FROM pf.log WHERE id = $1`, [logid]);
             await client.query('COMMIT');
 
-            res.json({ message: 'Operation undone', rows_deleted: del.rowCount });
+            res.json({
+                message: 'Operation undone',
+                rows_deleted: del.rowCount,
+                pf_ids: del.rows.map(r => r.pf_id)
+            });
         } catch (err) {
             await client.query('ROLLBACK');
             console.error(err);
diff --git a/routes/operations.js b/routes/operations.js
index 2d32df4..e3d74df 100644
--- a/routes/operations.js
+++ b/routes/operations.js
@@ -164,7 +164,11 @@ module.exports = function(pool) {
                     [versionId]
                 );
                 await client.query('COMMIT');
-                res.json({ rows_deleted: delRows.rowCount, log_entries_deleted: delLog.rowCount });
+                res.json({
+                    rows_deleted: delRows.rowCount,
+                    log_entries_deleted: delLog.rowCount,
+                    pf_ids: delRows.rows.map(r => r.pf_id)
+                });
             } catch (err) {
                 await client.query('ROLLBACK');
                 throw err;
@@ -377,7 +381,10 @@ module.exports = function(pool) {
                 );
                 await client.query('DELETE FROM pf.log WHERE id = $1', [logId]);
                 await client.query('COMMIT');
-                res.json({ rows_deleted: deleted.rowCount });
+                res.json({
+                    rows_deleted: deleted.rowCount,
+                    pf_ids: deleted.rows.map(r => r.pf_id)
+                });
             } catch (err) {
                 await client.query('ROLLBACK');
                 throw err;
diff --git a/ui/src/views/Forecast.jsx b/ui/src/views/Forecast.jsx
index bf3719e..e9f649f 100644
--- a/ui/src/views/Forecast.jsx
+++ b/ui/src/views/Forecast.jsx
@@ -192,8 +192,8 @@ export default function Forecast() {
       const worker = await perspective.worker()
       workerRef.current = worker
       tableRef.current  = rowCount > 0
-        ? await worker.table(buffer, { name: tableName })
-        : await worker.table([], { name: tableName })
+        ? await worker.table(buffer, { name: tableName, index: 'pf_id' })
+        : await worker.table([], { name: tableName, index: 'pf_id' })
 
       await viewer.load(worker)
 
@@ -386,8 +386,10 @@ export default function Forecast() {
       const data = await res.json()
       if (!res.ok) { flash(data.error, 'error'); return }
       setLogEntries(prev => prev.filter(e => e.id !== logId))
+      if (data.pf_ids?.length && tableRef.current) {
+        await tableRef.current.remove(data.pf_ids)
+      }
       flash(`Undone — ${data.rows_deleted} rows removed`)
-      initViewer(versionId, sourceId)
     } catch (err) {
       flash(err.message, 'error')
     } finally {