Bingo. My apologies for my misunderstanding.
Appreciate the prompt response.
Is there an update to this? I’ve been having the same problem and was able to fix it with the proposed filter above, just curious if there was a more permanent fix I should be aware of.
Gotcha!!
Ok, that works. Thank you very much for your help with this!
The URL is https://barnardgriffin.com/secure-auth-signin
And yes, that is correct. I can be logged in, and try to access the child site directly (https://barnardgriffintrade.com/) and the admin bar disappears, etc.
If I try to navigate to the child site from the Network admin dashboard, I get redirected to a 404.