I had the broken pipe segments too.
Finally figured out I some how got an earlier version.
Go to the BWEP page and re-download the "BWEP Gates of the Arctic v1"
The copy I got on 12/4/2019 didn't have the v1 in the title.
Comparing the Chandalar Shelf file in the two versions they are a different size so something changed when the official version was announced.
Bob
Update:
Ha, need to read Doug's NOTAMs
I see that on the 6th there was an announcement about a bunch of BWEP fixes - including the Gates....