Hi Peer, try this:

var index = 0;
var destinationPoint = moi.vectorMath.createPoint(1,1,1);

var rect_factory = moi.command.createFactory( 'rectangle' );
rect_factory.setInput( 0, moi.vectorMath.createFrame() );
rect_factory.setInput( 1, null );
rect_factory.setInput( 2, 5 );
rect_factory.setInput( 3, 5 );
rect_factory.setInput( 4, false );
var objList = rect_factory.calculate();
//moi.geometryDatabase.addObjects(objList);

var obj = objList.item(0);

obj.showPoints = true; // must show points to make them editable
obj.setEditPointSelected(index, true);

/*
non-interactive object picker with allowEditPoints()
simply to get edit point into an objectList so that it can be manipulated
*/
/*
var objectpicker = moi.ui.createObjectPicker();
objectpicker.allowEditPoints();
objectpicker.done();
var editPointInList = objectpicker.objects;
*/

var basePt = obj.getEditPoint(index);

var factory = moi.command.createFactory('move');
factory.setInput(0, objList);
factory.setInput(1, basePt)
factory.setInput(2, destinationPoint);

// remove the original object, gather up the newly moved object, and add to database
moi.geometryDatabase.removeObject(obj);
var movedObjInList = factory.calculate();
moi.geometryDatabase.addObjects(movedObjInList);

// re-hide the edit points
movedObjInList.item(0).showPoints = false;

That removes moi.geometryDatabase.addObjects(objList); , and removes the objectpicker piece

Thanks Michael for the edited code!

What you posted works for me by itself, but when I try incorporating it into the larger thing I'm working on I still have the same kind of problem with undo.

I removed the other instances of moi.geometryDatabase.addObjects() and don't have any object pickers, but the problem persists.

Is there a general principal I can use to troubleshoot this?

- Peer

Hi Peer, it looks like there's a bug where undo can get confused in certain cases if you both add and remove the same object within the same command.

- Michael