The ship that used to be for the Arch Haven location scroll before it got moved still generates. It even has the ambush gate that leads to where the scroll would be, but it obviously isn't there anymore. That gate that leads to nothing leads me to believe this is a bug.

NOTE: It won't let me upload for some reason, so here are the links to the images:

https://drive.google.com/file/d/17-Wl2AAdRI_XAXy7avGezQ3JBJgTagAt/view?usp=sharing

https://drive.google.com/file/d/1CHttG_Qa8TKlZOnwS-dFAVtrhMTo_Gkc/view?usp=sharing