?Can I clone a wp custom field?

Hi there!

I already have 8 custom fields created without ACF, previous coder didn’t knew about the wonders of ACF so I have now almost 1,000 posts with 8 wp custom fields and I really can not edit 8,000 fields, SO my question is: could I clone the field for example “engine” into ACF with the value already stored under the get_post_meta “engine”? If so, thank you. I am asking before buying because I’ve only seen cloning of ACF fields in your demo video, thanks!

If I can not clone them, how can I display the value of those fields inside ACF fields so that I can avoid the 8,000 edits… thanks!