Exported file duration as long as longest source video
I'm putting a simple video together with four source files playing in each quarter of the screen. The timeline shows the video should be 3:42, but when I export, the video length is the duration of the longest source file, which is 17:43, and it is all black screen after 3:42. This project was imported from Premiere Pro 2020 to 2021. I cannot figure out how to get the export to be limited to the timeline in Premiere Pro. I'm sure it's something simple, but I haven't encountered this before.