Same thing happened in this thread, https://community.pix4d.com/t/3387-My-project-was-divided-into-two-blocks-with-a-vertical-gap-of-about-5-meters#gsc.tab=0 and since it was just 1 block, the MTP option didn’t work.
I bet this project has multiple cameras like the other one and thus we are seeing a trend where letting your camera run in “auto” across significantly different conditions will seriously hurt processing. Once we see the quality report here then we will see how similar these two projects are in their data collection variables.