Edit content on Resources channels from onboarding feature is quite cumbersome

I'm a moderator on a Discord server, and I was in charge of writing the server rules and resources using the Onboarding features. 
The thing is that since the channels set to be a “resource channel” disappear from the channels list to appear only on the “Server Guide” I'm unable to add new content to it, because when I access the channel from the “Server Guide” it a appears as read only and as I already say the channel disappear from the channels lists, and do not appear on “Channels & Roles” either, so there is no way to access the channel easily.

What I tried:
> The only thing that worked for me was mention the channel i want to edit on a message, and then click the link.

> Another option, is remove the channel from “resources” every time I want to add something new. But it seems quite cumbersome for something that simple. 

¿Am I missing something?