Implementing saving behavior per active viewport

Packages/ohif-measurements/client/lib/toggleLabelButton.js

@@ -60,7 +60,10 @@ OHIF.measurements.toggleLabelButton = options => {
             options.measurement.description = description;
 
             // Notify that viewer suffered changes
-            OHIF.ui.unsavedChanges.set('viewer.studyViewer.measurements.renamed');
+            const { timepointId } = measurement;
+            const basePath = 'viewer.studyViewer.measurements';
+            const timepointPath = timepointId ? `.${timepointId}` : '';
+            OHIF.ui.unsavedChanges.set(`${basePath}${timepointPath}.renamed`);
         }
     };
     buttonView = Blaze.renderWithData(Template.measureFlow, data, document.body);