Yes this Feature Request is in the new Version 4.1.0 already implemented. So it can be closed from my side.
i downloaded the new version and this feature is already implemented. so thank you for your fast response @Stanimir_Stamenkov
New feature to save existing alias in File
When i open the resourcebundle editor with kepler and close kepler eclipse version...
In the kepler version it does work perfectly.
Plugin does not work with new eclipse luna version
Blame duplicate key when user types it