BUG: Fix Import Data button

and update change log.

CHANGES.rst

@@ -73,6 +73,9 @@ Specviz
 Bug Fixes
 ---------
 
+- Fixed loading data via the Import Data button on top-left of the application.
+  [#1608]
+
 Cubeviz
 ^^^^^^^
 
@@ -110,7 +113,7 @@ Specviz2d
 - Fixed default spectral extraction parameters when the background separation otherwise would have
   fallen directly on the edge of the image. [#1633]
 
-- Fix parser for Level 2 NIRSpec ``s2d`` files. [#1608]
+- Fixed parser for Level 2 NIRSpec ``s2d`` files. [#1608]
 
 Other Changes and Additions
 ---------------------------

jdaviz/configs/default/plugins/data_tools/data_tools.py

@@ -1,5 +1,4 @@
 from jdaviz.core.template_mixin import TemplateMixin
-from jdaviz.core.events import LoadDataMessage
 from traitlets import Unicode, Bool
 import os
 from jdaviz.configs.default.plugins.data_tools.file_chooser import FileChooser
@@ -41,14 +40,9 @@ def vue_load_data(self, *args, **kwargs):
             self.error_message = "No file selected"
         elif os.path.exists(self._file_upload.file_path):
             try:
-                load_data_message = LoadDataMessage(self._file_upload.file_path, sender=self)
-                self.hub.broadcast(load_data_message)
+                # NOTE: Helper loader does more stuff than native Application loader.
+                self.app._jdaviz_helper.load_data(self._file_upload.file_path)
             except Exception as err:
                 self.error_message = f"An error occurred when loading the file: {repr(err)}"
             else:
                 self.dialog = False
-
-            if self.config == 'imviz':
-                # Do this like what Imviz does at the end of loading sequence from helper.
-                from jdaviz.configs.imviz.helper import link_image_data
-                link_image_data(self._app, link_type='pixels', error_on_fail=False)