Apply suggestions from code review

Co-authored-by: Chris Markiewicz <effigies@gmail.com>

Author: koenhelwegen

nipype/interfaces/mrtrix/convert.py

@@ -40,7 +40,10 @@ def get_data_dims(volume):
 
 
 def transform_to_affine(streams, header, affine):
-    from dipy.tracking.utils import transform_tracking_output
+    try:
+        from dipy.tracking.utils import transform_tracking_output
+    except ImportError:
+        from dipy.tracking.utils import move_streamlines as transform_tracking_output
 
     rotation, scale = np.linalg.qr(affine)
     streams = transform_tracking_output(streams, rotation)
@@ -193,10 +196,11 @@ class MRTrix2TrackVis(DipyBaseInterface):
     output_spec = MRTrix2TrackVisOutputSpec
 
     def _run_interface(self, runtime):
-        from dipy.tracking.utils import (
-            affine_from_fsl_mat_file,
-            transform_tracking_output,
-        )
+        from dipy.tracking.utils import affine_from_fsl_mat_file
+        try:
+            from dipy.tracking.utils import transform_tracking_output
+        except ImportError:
+            from dipy.tracking.utils import move_streamlines as transform_tracking_output
 
         dx, dy, dz = get_data_dims(self.inputs.image_file)
         vx, vy, vz = get_vox_dims(self.inputs.image_file)