Problem with the metafields of the contributor taxonomies with a cloning tool

I do use a cloning tool for the creation of new sites. I had no problem till now. The cloning tool, clone the tables without problems till yesterday. I did clone the books but it was the first time I do have the meta fiels of the contributors: first name and first name (maybe the mistake is because is twice the same field name??) with name and surname. But the resoult is the Array word instead the name and surname.

but the meta keys are correct… (the meta values where Array - Array before my modification)

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Maybe the problem is with the cloning tool. but is strange , I use to use that tool all the time and just that specifical situation is wrong

This seems like it might be a bug.