I’ve an existing website with a largish number of fields, mostly text or text area, that I now need to group together for display. There doesn’t seem to be any way to create a group field and then move existing fields into it. Can this be done or will I have to export and reimport the data in to a new set of fields?
You cannot just move fields into a group, if you do you will loose the data because the subfields are stored under different meta_keys. Yes, you would basically need to somehow export and import all of the data.