diff --git a/Modules/IGT/Testing/files.cmake b/Modules/IGT/Testing/files.cmake
index d3b2d40b82..1d3b77bfdf 100644
--- a/Modules/IGT/Testing/files.cmake
+++ b/Modules/IGT/Testing/files.cmake
@@ -1,57 +1,58 @@
 set(MODULE_TESTS
    # IMPORTANT: If you plan to deactivate / comment out a test please write a bug number to the commented out line of code.
    #
    #     Example: #mitkMyTest #this test is commented out because of bug 12345
    #
    # It is important that the bug is open and that the test will be activated again before the bug is closed. This assures that
    # no test is forgotten after it was commented out. If there is no bug for your current problem, please add a new one and
    # mark it as critical.
 
-   ################## DISABLED TESTS #################################################
-   # mitkNavigationToolStorageDeserializerTest.cpp # disabled because of bug 17303
-   # mitkNavigationToolStorageSerializerAndDeserializerIntegrationTest.cpp # disabled because of bug 17181
-
+   ################## ON THE FENCE TESTS #################################################
+   mitkNavigationToolStorageDeserializerTest.cpp # This test was disabled because of bug 17303.
+  # Has been activated to test if bug has been fixed. If it proves to be stable move to RUNNING TESTS
+   mitkNavigationToolStorageSerializerAndDeserializerIntegrationTest.cpp # This test was disabled because of bug 17181.
+  # Has been activated to test if bug has been fixed. If it proves to be stable move to RUNNING TESTS
    ################# RUNNING TESTS ###################################################
    mitkCameraVisualizationTest.cpp
    mitkClaronInterfaceTest.cpp
    mitkClaronToolTest.cpp
    mitkClaronTrackingDeviceTest.cpp
    mitkInternalTrackingToolTest.cpp
    mitkNavigationDataDisplacementFilterTest.cpp
    mitkNavigationDataLandmarkTransformFilterTest.cpp
    mitkNavigationDataObjectVisualizationFilterTest.cpp
    mitkNavigationDataTest.cpp
    mitkNavigationDataRecorderTest.cpp
    mitkNavigationDataReferenceTransformFilterTest.cpp
    mitkNavigationDataSequentialPlayerTest.cpp
    mitkNavigationDataSourceTest.cpp
    mitkNavigationDataToMessageFilterTest.cpp
    mitkNavigationDataToNavigationDataFilterTest.cpp
    mitkNavigationDataToPointSetFilterTest.cpp
    mitkNavigationDataTransformFilterTest.cpp
    mitkNDIPassiveToolTest.cpp
    mitkNDIProtocolTest.cpp
    mitkNDITrackingDeviceTest.cpp
    mitkTimeStampTest.cpp
    mitkTrackingVolumeGeneratorTest.cpp
    mitkTrackingDeviceTest.cpp
    mitkTrackingToolTest.cpp
    mitkVirtualTrackingDeviceTest.cpp
    mitkNavigationDataPlayerTest.cpp # see bug 11636 (extend this test by microservices)
    mitkTrackingDeviceSourceTest.cpp
    mitkTrackingDeviceSourceConfiguratorTest.cpp
    mitkNavigationDataEvaluationFilterTest.cpp
    mitkTrackingTypesTest.cpp
    # ------------------ Navigation Tool Management Tests -------------------
    mitkNavigationToolStorageTest.cpp
    mitkNavigationToolTest.cpp
    mitkNavigationToolReaderAndWriterTest.cpp
    mitkNavigationToolStorageSerializerTest.cpp
    # -----------------------------------------------------------------------
 )
 
 set(MODULE_CUSTOM_TESTS
   mitkNDIAuroraHardwareTest.cpp
   mitkNDIPolarisHardwareTest.cpp
   mitkClaronTrackingDeviceHardwareTest.cpp
 )