EDIT

Is this still an open issue?

Applied in changeset taxeditor|90f49fe41d5816b7fce308a5200a950550758e1e.

please review

I could not reproduce this exception how described above but there is another one.

Now there is also the context menu option to move the factual data when right-clicked on an element

)

By the way, the tooltips for both options seem to be swapped.

steps to reproduce:

1. Open context menu for description element
2. Select "Move Factual Data to Other Taxon"
3. Select any other taxon and click ok

!ENTRY org.eclipse.ui 4 0 2018-10-05 09:14:09.583
!MESSAGE This is an unexpected error.
Please contact EDIT Support (EditSupport@bgbm.org) with the error trace below (click on the 'Details' button).
!STACK 0
java.lang.Exception: login : admin
editor version : 5.4.0.qualifier
server : localhost (localhost-dev)
schema version : 5.0.0.0.20180514
os : Linux 4.15.0-36-generic amd64
java : 1.8.0_121
org.eclipse.swt.SWTException: Failed to execute runnable (java.lang.NullPointerException)
    at org.eclipse.swt.SWT.error(SWT.java:4533)
    at org.eclipse.swt.SWT.error(SWT.java:4448)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:185)
    at org.eclipse.swt.widgets.Display.runAsyncMessages(Display.java:4536)
    at org.eclipse.swt.widgets.Display.readAndDispatch(Display.java:4154)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine$4.run(PartRenderingEngine.java:1121)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
    at org.eclipse.e4.ui.internal.workbench.swt.PartRenderingEngine.run(PartRenderingEngine.java:1022)
    at org.eclipse.e4.ui.internal.workbench.E4Workbench.createAndRunUI(E4Workbench.java:150)
    at org.eclipse.ui.internal.Workbench$5.run(Workbench.java:693)
    at org.eclipse.core.databinding.observable.Realm.runWithDefault(Realm.java:336)
    at org.eclipse.ui.internal.Workbench.createAndRunWorkbench(Workbench.java:610)
    at org.eclipse.ui.PlatformUI.createAndRunWorkbench(PlatformUI.java:148)
    at eu.etaxonomy.taxeditor.Application.start(Application.java:24)
    at org.eclipse.equinox.internal.app.EclipseAppHandle.run(EclipseAppHandle.java:196)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.runApplication(EclipseAppLauncher.java:134)
    at org.eclipse.core.runtime.internal.adaptor.EclipseAppLauncher.start(EclipseAppLauncher.java:104)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:388)
    at org.eclipse.core.runtime.adaptor.EclipseStarter.run(EclipseStarter.java:243)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.eclipse.equinox.launcher.Main.invokeFramework(Main.java:673)
    at org.eclipse.equinox.launcher.Main.basicRun(Main.java:610)
    at org.eclipse.equinox.launcher.Main.run(Main.java:1519)
    at org.eclipse.equinox.launcher.Main.main(Main.java:1492)
Caused by: java.lang.NullPointerException
    at eu.etaxonomy.taxeditor.editor.view.descriptive.operation.MoveDescriptionToOtherTaxonOperation.execute(MoveDescriptionToOtherTaxonOperation.java:79)
    at eu.etaxonomy.taxeditor.model.AbstractUtility.lambda$3(AbstractUtility.java:141)
    at org.eclipse.ui.internal.UILockListener.doPendingWork(UILockListener.java:162)
    at org.eclipse.ui.internal.UISynchronizer$3.run(UISynchronizer.java:154)
    at org.eclipse.swt.widgets.RunnableLock.run(RunnableLock.java:35)
    at org.eclipse.swt.widgets.Synchronizer.runAsyncMessages(Synchronizer.java:182)
    ... 24 more

works fine