Fixed the issue

...s/tooling/kernel/ui/extension/base/EObjectActionBase.java

...ortiss/tooling/kernel/ui/internal/actions/CopyAction.java

...fortiss/tooling/kernel/ui/internal/actions/CutAction.java

...tiss/tooling/kernel/ui/internal/actions/DeleteAction.java

...rc/org/fortiss/tooling/kernel/ui/util/CopyPasteUtils.java

org.fortiss.tooling.kernel/trunk/model/kernel.ecore

org.fortiss.tooling.kernel/trunk/model/kernel.genmodel

...fortiss/tooling/kernel/utils/KernelModelElementUtils.java