I added a _redirects file that worked fine and was successfully processed in the PR preview branch, but when I merged the PR I get:
No redirect rules processed
This deploy did not include any redirect rules. Learn more about redirects.
Repo can be found here.
Hello @liam, if it says ‘no redirect rules processed’ then it means that our system didn’t find a _redirects file. You can check by downloading your deploy:
It’s possible that your build might be removing the content of your publish directory but I can’t be sure. You’ll need to make sure that the file is in your publish directory by the end of your build process. Hope that helps.
Yes, that was the issue! There is a different command run for preview vs deploy 
Thanks for the update! Glad you got things figured out. 
