diff --git a/tests/ableton-hybrid.test.ts b/tests/ableton-hybrid.test.ts
index 7cec276..c266b66 100644
--- a/tests/ableton-hybrid.test.ts
+++ b/tests/ableton-hybrid.test.ts
@@ -178,11 +178,23 @@ test('serializes every nested Live 10 Simpler as an identified list member', asy
     const simplerTags = [...xml.matchAll(/<OriginalSimpler(?:\s[^>]*)?>/g)].map(
       (match) => match[0],
     );
+    const rackTags = [...xml.matchAll(/<DrumGroupDevice\b[\s\S]*?<\/DrumGroupDevice>/g)].map(
+      (match) => match[0],
+    );
 
     assert.ok(simplerTags.length > 0);
     assert.ok(simplerTags.every((tag) => /\sId="\d+"/.test(tag)));
+    assert.ok(rackTags.length > 0);
+    assert.ok(rackTags.every((rack) => /<LockId Value="0"\s*\/>/.test(rack)));
+    assert.ok(rackTags.every((rack) => /<LockSeal Value="0"\s*\/>/.test(rack)));
+    assert.ok(
+      rackTags.every(
+        (rack) => [...rack.matchAll(/<IsSelected Value="true"\s*\/>/g)].length === 1,
+      ),
+    );
     assert.doesNotMatch(xml, /<ReturnBranch\s/);
     assert.doesNotMatch(xml, /<AudioBranchSendInfo\s/);
+    assert.doesNotMatch(xml, /Big Break Kit/);
   } finally {
     await server.close();
   }