The instructions for this project instruct not to index certificates of arrival: "Do not index cover pages, certificates of loyalty, certificates of arrival,...", yet further down, we are shown:
"How to Index a Certificate of Arrival"
Which do you want us to do?
It is to be indexed.
https://community.familysearch.org/en/discussion/144215/i-am-confused-on-how-to-index-naturalization-certificates-of-arrival#latest