I’m currently testing a cloner plugin myself. The ones mentioned are great but I had a case that involved Publisher, Relationship fields, and Relationship fields within Grid fields (that was a challenge). Those use case pushed me to write one that handled those things. I’m still testing and need to add Fluid Field support and some other third-party field support (i.e. Assets) but it’s working with the above mentioned and fields that store their data in the channel_data table. If you’d like a copy to help me test just PM me.
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