Honestly I have some Idea How is Work’s but not well enough?:
I’ve have an old forum with a name, the I start discourse with a temporally name, when we start, we rename the old forum to a new name and the temporally name take the original name.
Now all search in google redirect to Discourse and Give user 404 I would like do something with Permalink:
So discourse will take the name of the existing forum. You will rename the existing forum. You want discourse to redirect the old forum URLs to the new name for the old forum?
What you want is a permalink redirect. That will let you redirect them all at once.
Sorry but I’m being crazy with this, I do not understand your jargon:
Is there a way to check all incoming traffic from Google from a site that is not on Discourse and not was migrated http://askoldexample.org and give me 404 on Discourse and redirect this traffic to specific Category on Discourse? or a Topic example:
NOTE: Can you’ll explain the image, something for DUMMYES: I would like to try to understand this, I read and re-read the reference but I can’t understand…
What is New.
What is ?
Topic ID for redirect to a topic on discourse? How to find it? and fill it
Post ID for redirect to a post on discourse? How to find it? and fill it
Category ID for redirect to a Category on Discourse? How to find it? and fill it
External URL for redirect to external link??? or for What? and fill it
What is the another field? for each field comment before? and fill it
That’s why you’re question didn’t make any sense. This is not a discourse question. It’s a question for whatever other site you’re coming from. You can Google “your web server 404 redirect”