fix: PAB table: copy button not working

refs #607

src/app/components/pab-table/pab-table.component.ts

@@ -969,7 +969,7 @@ export class PabTableComponent implements AfterViewInit, AfterViewChecked, OnIni
         for (let i = 0; i < this.childrenToAdd; i++) {
             for (const si of this.selectedItems) {
                 const newChild = Session.getInstance().createNub(
-                    si.properties.clone(),
+                    si,
                     si.parent
                 );
                 // copy parameter values
@@ -982,7 +982,7 @@ export class PabTableComponent implements AfterViewInit, AfterViewChecked, OnIni
                 if (si instanceof ParallelStructure) {
                     for (const c of si.getChildren()) {
                         const newGrandChild = Session.getInstance().createNub(
-                            c.properties.clone(),
+                            c,
                             newChild
                         );
                         // copy children parameters values