Get the old modeler back
Get the old modeler back, and not the new one that is awfully inconvenient, for instance for managing multiple hierarchies
The legacy modeler has been phased out for a variety of reasons and functionality constraints.
Of course we always aim to improve the modeling capabilities, so if you would like us to add some specific functionality to the modeler, please create a new reuqest.
Birgit Drewitz commented
You get the old modeller when you select the litte arrow below the Icon and then click to "Modeller".