Rig Duplicator helps duplicate Slider and Length Rigs.
At the moment he has three options available:
If your rig united by separated layer, to duplicate the whole rig you need to select this Anim Controller layer.
To make sure you select the right layer, check that this layer has comment ‘Anim Controller’
screencast 2022-09-19 22-59-24.mp4
If your rig located in the shape layer, you need to select every shape layer
screencast 2022-09-20 02-22-57.mp4
The Len Rig Controller selection duplicates the two controller layers