duplicating a mesh object with modelling cloth enabled breaks the addon for the object and the duplicate

[jazz75]

When I duplicated an object that had been sewn at the top , then added some more sew lines on the right side, the object would no longer work with the addon. By no longer work, I mean that clicking the Continuous Update button thereafter resulted in nothing changing in the 3D view. Please see attached blend file for an example
ClothingTemplatesForModellingClothAddon.zip

. Click the Continuous Update button and nothing will happen.

[jazz75]

The blend file was saved in the Blender build dated 30th May 2019 17:34.

[jazz75]

A workaround to continue working on the broken object is to export it as an obj, start a new Blender project and import the obj into that project.