This is not a helpful reply. As I stated in my original post, Visits would not work because the values for A4T data persist indefinitely as long as a user has activity in the past 90 days.

https://experienceleaguecommunities.adobe.com/t5/adobe-analytics-questions/is-the-metric-quot-activity-impression-quot-seen-in-at4-panel-in/m-p/392369 Reviving this closed topic. I want to be able to measure the conversion rate for visits that saw a given Target Activity, say "Target Test > Experien...

You don't need to write javascript to create a file. Just create a new file and change the extension to .fin