diff --git a/javascript/ql/test/library-tests/frameworks/data/test.expected b/javascript/ql/test/library-tests/frameworks/data/test.expected
index 28d7229789d..44e4353a9a1 100644
--- a/javascript/ql/test/library-tests/frameworks/data/test.expected
+++ b/javascript/ql/test/library-tests/frameworks/data/test.expected
@@ -1,3 +1,4 @@
+legacyDataFlowDifference
 consistencyIssue
 taintFlow
 | paramDecorator.ts:6:54:6:54 | x | paramDecorator.ts:7:10:7:10 | x |
diff --git a/javascript/ql/test/library-tests/frameworks/data/test.ql b/javascript/ql/test/library-tests/frameworks/data/test.ql
index 5ee8d0e3f9c..7d18ba01c55 100644
--- a/javascript/ql/test/library-tests/frameworks/data/test.ql
+++ b/javascript/ql/test/library-tests/frameworks/data/test.ql
@@ -84,24 +84,40 @@ class Sources extends ModelInput::SourceModelCsv {
   }
 }
 
-class BasicTaintTracking extends TaintTracking::Configuration {
-  BasicTaintTracking() { this = "BasicTaintTracking" }
-
-  override predicate isSource(DataFlow::Node source) {
+module TestConfig implements DataFlow::ConfigSig {
+  predicate isSource(DataFlow::Node source) {
     source.(DataFlow::CallNode).getCalleeName() = "source"
     or
     source = ModelOutput::getASourceNode("test-source").asSource()
   }
 
-  override predicate isSink(DataFlow::Node sink) {
+  predicate isSink(DataFlow::Node sink) {
     sink = any(DataFlow::CallNode call | call.getCalleeName() = "sink").getAnArgument()
     or
     sink = ModelOutput::getASinkNode("test-sink").asSink()
   }
 }
 
+module TestFlow = TaintTracking::Global<TestConfig>;
+
+class Consistency extends ConsistencyConfiguration {
+  Consistency() { this = "Consistency" }
+
+  override DataFlow::Node getAnAlert() { TestFlow::flowTo(result) }
+}
+
+class LegacyConfig extends TaintTracking::Configuration {
+  LegacyConfig() { this = "LegacyConfig" }
+
+  override predicate isSource(DataFlow::Node source) { TestConfig::isSource(source) }
+
+  override predicate isSink(DataFlow::Node sink) { TestConfig::isSink(sink) }
+}
+
+import testUtilities.LegacyDataFlowDiff::DataFlowDiff<TestFlow, LegacyConfig>
+
 query predicate taintFlow(DataFlow::Node source, DataFlow::Node sink) {
-  any(BasicTaintTracking tr).hasFlow(source, sink)
+  TestFlow::flow(source, sink)
 }
 
 query predicate isSink(DataFlow::Node node, string kind) {