diff --git a/tests/GameCult.Caching.Tests/ElementIdTests.cs b/tests/GameCult.Caching.Tests/ElementIdTests.cs
index a633fd39..e18276fe 100644
--- a/tests/GameCult.Caching.Tests/ElementIdTests.cs
+++ b/tests/GameCult.Caching.Tests/ElementIdTests.cs
@@ -691,6 +691,24 @@ namespace GameCult.Caching.Tests
             Assert.That(HeaderOf(marked), Is.EqualTo("cultcache.store.v3"), "a file already marked on disk stays marked");
         }
 
+        [Test]
+        public void AnIdAlreadyThereMarksTheStoreAndSoDoesARecordLoadedHoldingOne()
+        {
+            var preset = PathOf("preset.cc");
+            using (var cache = Open(preset))
+                cache.Commit(batch => batch.Upsert(typeof(IdDeck), new IdDeck { Name = "p", Reels = { new IdReel { Id = HexA } } }, new CultRecordKey("p")));
+            Assert.That(HeaderOf(preset), Is.EqualTo("cultcache.store.v3"), "the deck minted nothing, and still holds an id");
+
+            // The deck reloads holding ids it did not mint; a whole-store flush of a store now holding only that deck and an empty one.
+            using (var cache = Open(preset))
+            {
+                cache.UpsertAsync(typeof(IdDeck), EmptyDeck("e"), new CultRecordKey("e")).GetAwaiter().GetResult();
+                cache.FlushAllBackingStores();
+            }
+
+            Assert.That(HeaderOf(preset), Is.EqualTo("cultcache.store.v3"), "a loaded record's ids count");
+        }
+
         [Test]
         public void ADirectoryStoreIsMarkedByTheIdsItWritesAndAnEmptyDeckDoesNotMarkIt()
         {