diff --git a/backend/FwLite/MiniLcm.Tests/CreateEntryTestsBase.cs b/backend/FwLite/MiniLcm.Tests/CreateEntryTestsBase.cs
index ceb32c1a2..8f937f50e 100644
--- a/backend/FwLite/MiniLcm.Tests/CreateEntryTestsBase.cs
+++ b/backend/FwLite/MiniLcm.Tests/CreateEntryTestsBase.cs
@@ -26,13 +26,7 @@ public async Task CanCreateEntry_AutoFaker()
         var createdEntry = await Api.CreateEntry(entry);
         createdEntry.Should().BeEquivalentTo(entry, options => options
             .For(e => e.Components).Exclude(e => e.Id)
-            .For(e => e.ComplexForms).Exclude(e => e.Id)
-            //predefined is always true in fwdata bridge, so we need to exclude it for now
-            .For(e => e.Senses).For(s => s.SemanticDomains).Exclude(s => s.Predefined)
-            // TODO: Figure out how to exclude just PartOfSpeech.Predefined
-            // .For(e => e.Senses).Exclude(s => s.PartOfSpeech.Predefined)); // rejected because PartOfSpeech could be null
-            // .For(e => e.Senses).Exclude(s => s.PartOfSpeech?.Predefined)); // not allowed because "An expression tree lambda may not contain a null propagating operator."
-            .For(e => e.Senses).Exclude(s => s.PartOfSpeech)); // Not ideal but best we can do for now
+            .For(e => e.ComplexForms).Exclude(e => e.Id));
     }
 
     [Fact]
diff --git a/backend/FwLite/MiniLcm/Validators/PartOfSpeechValidator.cs b/backend/FwLite/MiniLcm/Validators/PartOfSpeechValidator.cs
index 572d894a8..476c030b2 100644
--- a/backend/FwLite/MiniLcm/Validators/PartOfSpeechValidator.cs
+++ b/backend/FwLite/MiniLcm/Validators/PartOfSpeechValidator.cs
@@ -7,7 +7,7 @@ public class PartOfSpeechValidator : AbstractValidator<PartOfSpeech>
 {
     public PartOfSpeechValidator()
     {
-        // RuleFor(pos => pos.Id).Must(BeCanonicalGuid).When(pos => pos.Predefined); // TODO: Uncomment once PR 1350 is merged
+        RuleFor(pos => pos.Id).Must(BeCanonicalGuid).When(pos => pos.Predefined);
         RuleFor(pos => pos.DeletedAt).Null();
         RuleFor(pos => pos.Name).Required();
     }
diff --git a/backend/FwLite/MiniLcm/Validators/SenseValidator.cs b/backend/FwLite/MiniLcm/Validators/SenseValidator.cs
index 34e28f713..41ac67378 100644
--- a/backend/FwLite/MiniLcm/Validators/SenseValidator.cs
+++ b/backend/FwLite/MiniLcm/Validators/SenseValidator.cs
@@ -10,8 +10,7 @@ public SenseValidator()
         RuleFor(s => s.DeletedAt).Null();
         RuleFor(s => s.Definition).NoEmptyValues();
         RuleFor(s => s.Gloss).NoEmptyValues();
-        // RuleFor(s => s.PartOfSpeech).Empty(); // TODO: Comment out if we're not yet ready to move away from strings
-        // RuleFor(s => s.PartOfSpeechId).SetValidator(new IsCanonicalPartOfSpeechGuidValidator()); // Can't do this statelessly, as we'd need a full PartOfSpeech object to check if it's predefined or not
+        RuleFor(s => s.PartOfSpeech!).SetValidator(new PartOfSpeechValidator()).When(s => s.PartOfSpeech is not null);
         RuleForEach(s => s.SemanticDomains).SetValidator(new SemanticDomainValidator());
         RuleForEach(s => s.ExampleSentences).SetValidator(sense => new ExampleSentenceValidator(sense));
     }