Hi FlashFire, you can actually make a copy that behaves in the same way as Mirror.

To do this, select your object, and then run the Transform > Copy command on it to make a copy of it somewhere.

Then select the copied object that you just made, and then run the Edit > History command on it, and click the "Enable update" button that shows up.


After you have enabled history updates on the copied object, it will then automatically update itself if you move control points of the original object around.


Some commands have the objects that they create have history updates turned on automatically like Mirror. Some other commands where it can sometimes tend to get in the way have it turned off by default but you can turn the updates for those objects on by the Edit > History command.

- Michael