diff --git a/resources/sql/autopatches/20190412.dashboard.01.panels.php b/resources/sql/autopatches/20190412.dashboard.01.panels.php
new file mode 100644
--- /dev/null
+++ b/resources/sql/autopatches/20190412.dashboard.01.panels.php
@@ -0,0 +1,81 @@
+<?php
+
+// Convert dashboards to a new storage format. The old storage format looks
+// like this:
+
+// {
+//   "0": ["PHID-DSHP-A", ...],
+//   "1": ["PHID-DSHP-B", ...]
+// }
+
+// The new storage format looks like this:
+
+// [
+//   {
+//     "panelKey": "abcdefgh",
+//     "panelPHID": "PHID-DSHP-A",
+//     "columnKey": "left"
+//   },
+//   ...
+// ]
+
+// One major issue with the old storage format is that when multiple copies of
+// a single dashboard panel appeared on the same dashboard, the UI had a lot
+// of difficulty acting on a particular copy because copies were identified
+// only by PHID and all copies of the same panel have the same panel PHID.
+
+$dashboard_table = new PhabricatorDashboard();
+$conn = $dashboard_table->establishConnection('r');
+$table_name = $dashboard_table->getTableName();
+
+$rows = new LiskRawMigrationIterator($conn, $table_name);
+foreach ($rows as $row) {
+  $config = $row['layoutConfig'];
+
+  try {
+    $config = phutil_json_decode($config);
+  } catch (Exception $ex) {
+    $config = array();
+  }
+
+  if (!is_array($config)) {
+    $config = array();
+  }
+
+  $panels = idx($config, 'panelLocations');
+  if (!is_array($panels)) {
+    $panels = array();
+  }
+
+  if (idx($config, 'layoutMode') === 'layout-mode-full') {
+    $column_map = array(
+      0 => 'main',
+    );
+  } else {
+    $column_map = array(
+      0 => 'left',
+      1 => 'right',
+    );
+  }
+
+  $panel_list = array();
+  foreach ($panels as $column_idx => $panel_phids) {
+    $column_key = idx($column_map, $column_idx, 'unknown');
+    foreach ($panel_phids as $panel_phid) {
+      $panel_list[] = array(
+        'panelKey' => Filesystem::readRandomCharacters(8),
+        'columnKey' => $column_key,
+        'panelPHID' => $panel_phid,
+      );
+    }
+  }
+  unset($config['panelLocations']);
+  $config['panels'] = $panel_list;
+
+  queryfx(
+    $conn,
+    'UPDATE %R SET layoutConfig = %s WHERE id = %d',
+    $dashboard_table,
+    phutil_json_encode($config),
+    $row['id']);
+}