diff --git a/legend-engine-core/legend-engine-core-pure/legend-engine-pure-code-compiled-core/src/main/resources/core/pure/tds/relation/tdsToRelation.pure b/legend-engine-core/legend-engine-core-pure/legend-engine-pure-code-compiled-core/src/main/resources/core/pure/tds/relation/tdsToRelation.pure
index a3e86a27fca..5af8f0d6fd6 100644
--- a/legend-engine-core/legend-engine-core-pure/legend-engine-pure-code-compiled-core/src/main/resources/core/pure/tds/relation/tdsToRelation.pure
+++ b/legend-engine-core/legend-engine-core-pure/legend-engine-pure-code-compiled-core/src/main/resources/core/pure/tds/relation/tdsToRelation.pure
@@ -70,13 +70,12 @@ function meta::pure::tds::toRelation::transform(a:AppliedFunction[1], extensions
 
         appliedFunction(project_C_MANY__FuncColSpecArray_1__Relation_1_, [$a.parameters->at(0)->transform($extensions), $columns]);
     ),
-    //TODO activate when relation inference is fixed on project
-    // pair(project_TabularDataSet_1__ColumnSpecification_MANY__TabularDataSet_1_->cast(@Function<Any>),
-    //   |
-    //     let columns = $a.parameters->at(1)->colsToColSpecArrayInstance($extensions);
+    pair(project_TabularDataSet_1__ColumnSpecification_MANY__TabularDataSet_1_->cast(@Function<Any>),
+      |
+        let columns = $a.parameters->at(1)->colsToColSpecArrayInstance($extensions);
 
-    //     appliedFunction(project_Relation_1__FuncColSpecArray_1__Relation_1_, [$a.parameters->at(0)->transform($extensions), $columns]);
-    // ),
+        appliedFunction(project_Relation_1__FuncColSpecArray_1__Relation_1_, [$a.parameters->at(0)->transform($extensions), $columns]);
+    ),
     pair(groupBy_K_MANY__Function_MANY__AggregateValue_MANY__String_MANY__TabularDataSet_1_->cast(@Function<Any>),
       |
         let groupByColumns = $a.parameters->at(1)->fromCollection()->cast(@Lambda);
diff --git a/legend-engine-core/legend-engine-core-pure/legend-engine-pure-code-compiled-core/src/main/resources/core/pure/tds/relation/testTdsToRelation.pure b/legend-engine-core/legend-engine-core-pure/legend-engine-pure-code-compiled-core/src/main/resources/core/pure/tds/relation/testTdsToRelation.pure
index 5eae6c1c5ab..89ca7d87f53 100644
--- a/legend-engine-core/legend-engine-core-pure/legend-engine-pure-code-compiled-core/src/main/resources/core/pure/tds/relation/testTdsToRelation.pure
+++ b/legend-engine-core/legend-engine-core-pure/legend-engine-pure-code-compiled-core/src/main/resources/core/pure/tds/relation/testTdsToRelation.pure
@@ -69,38 +69,37 @@ function <<test.Test>> meta::pure::tds::toRelation::testProjectSingle():Boolean[
   );
 }
 
-//TODO activate when relation inference is fixed on project
-// function <<test.Test>> meta::pure::tds::toRelation::testTDSProjectSingle():Boolean[1]
-// {
-//   test(
-//     {| TestClass.all()
-//       ->project(col(x | $x.string, 'str'))
-//       ->project(col(x:TDSRow[1] | $x.getString('str')->toOne() + 'abc', 'newCol'))},
-//     {| TestClass.all()
-//         ->project(~[str: x | $x.string])
-//         ->project(~[newCol : x | $x.str->toOne() + 'abc'])}
-//   );
-// }
-
-// function <<test.Test>> meta::pure::tds::toRelation::testTDSProjectMulti():Boolean[1]
-// {
-//   test(
-//     {| TestClass.all()
-//         ->project([col(x | $x.string, 'str'), col(x | $x.integer, 'int')])
-//         ->project([
-//           col(x:TDSRow[1] | $x.getString('str')->toOne() + 'abc', 'newCol'),
-//           col(x:TDSRow[1] | $x.getString('str')->toOne() + 'def', 'newCol2')
-//         ])},
-//     {| TestClass.all()
-//         ->project(~[str: x | $x.string, int: x | $x.integer])
-//         ->project(~[
-//           newCol : x | $x.str->toOne() + 'abc',
-//           newCol2 : x | $x.str->toOne() + 'def'
-//         ])
-//     }
-//   );
-// }
 
+function <<test.Test>> meta::pure::tds::toRelation::testTDSProjectSingle():Boolean[1]
+{
+  test(
+    {| TestClass.all()
+      ->project(col(x | $x.string, 'str'))
+      ->project(col(x:TDSRow[1] | $x.getString('str')->toOne() + 'abc', 'newCol'))},
+    {| TestClass.all()
+        ->project(~[str: x | $x.string])
+        ->project(~[newCol : x | $x.str->toOne() + 'abc'])}
+  );
+}
+
+function <<test.Test>> meta::pure::tds::toRelation::testTDSProjectMulti():Boolean[1]
+{
+  test(
+    {| TestClass.all()
+        ->project([col(x | $x.string, 'str'), col(x | $x.integer, 'int')])
+        ->project([
+          col(x:TDSRow[1] | $x.getString('str')->toOne() + 'abc', 'newCol'),
+          col(x:TDSRow[1] | $x.getString('str')->toOne() + 'def', 'newCol2')
+        ])},
+    {| TestClass.all()
+        ->project(~[str: x | $x.string, int: x | $x.integer])
+        ->project(~[
+          newCol : x | $x.str->toOne() + 'abc',
+          newCol2 : x | $x.str->toOne() + 'def'
+        ])
+    }
+  );
+}
 
 function <<test.Test>> meta::pure::tds::toRelation::testExtendSingle():Boolean[1]
 {