Hi @ObbieZ
Thanks for all the info.
You may have stumbled across a bug with this statement:
Does the field group already exist because ACF sees it in the load folder (even though *I* can’t see it)?
I’ll do some testing and get back to you.
Can you attempt to remove the .json file from your load point folder
and then import it? Does the import work if the .json file is not within the load point folder?