I have successfully created a JSON csv file and uploaded the information to my collection. The example was GREAT!! This will help me a bunch.
I do have one question. I have uploaded to my wix image uploads in a folder called PNG Grads, 470 images. can you tell me how to address those when I import the JSON. In the collection, it shows the filename only, so not sure whether that would work but seems more would be required to resolve.
If there is no solution at this time to connect to those images during the import, I will have to update each record individually to add the one or two images I want in each collection row.