Ah, somehow I mixed up the two image files there, sorry! The top image is the result of running fdisk -l, and the bottom is the d1.minimum_partition_size. The image was of a 500gb SATA drive (mostly empty) and I want to deploy to a 50gb VM.
I have made the change you suggested and it worked! What’s this file actually used for? I assume it tells Partclone which partitions to not resize?