Definitive Edition: Having issue with too many triggers not working

I'm attempting to create a scenario in AOE:DE through the map editor. The goal of the scenario is to unlock the "Wololo" achievement by having 1000 priests convert 1000 man-at-arms. I've set up the man-at-arms up on cliffs with priests at the bottom.

Through triggers, I'm attempting to use "Task Object" in order to have priests convert their respective units. I did a test on a small row of cliffs and used five task object effects on one trigger line. It works just fine, but I decided to do another trigger line with 56 task object effects and now none of the priests attempt to convert.

I can't seem to figure out what the issue is. Is there a limit to how many task object effects I can have at once, or did I mess up just one of them, causing everything else to break? I'm not familiar at all with the scenario editor and this is my first time using it, so I may not be literate with it as a program.