if an action gets deleted, i have no way of adding it back?
I cant add it, because it says it already exists.
Please provide a step-by-step example so I can reproduce your problem here and file a bug for it. Additionally if you want to add a node back to the graph that you removed, just use an “Existing Class” for the action and point at the class in your project, then the node will be readded to the diagram and no new classes will be created.
also it doesn’t support any other action classes
The “ActionClass” combobox in the wizard is editable, additionally you can select an “Existing class” to use for the node… does this not work for you?