With the help of my NI inside sales rep, I was able to get a cDAQ Linux installation image and instructions to restore and existing Linux chassis or convert a WES7 to Linux. NI was very protective with this stuff even though the Linus RT source is published on GIthub.
Just got "The page you requested may have moved, been deleted, or is inaccessible. Search below for other content, or contact NI for assistance." on all 3 Fall 2018 links