Just a word of caution, if any of the fields were image, file, relationships, galleries, multi select fields and few others I don’t recall off the top of my head, then you may seem some display issues on the front end until you edit pages, post or wherever the fields are located. The reason for this is that the field keys for the new fields will be different than the old fields and ACF does may not know what to do with the data in the database without being able to located the correct key.
