Multiple Domain Clarification-Help
So I have read, reread, rereread all the documentation in the community about having 2+ domains living in the same Marketo Instance and I cannot understand what I am missing.
I have requested a CNAME set up with my IT Dept and created a domain alias. (see below NEW CNAME/Alias):

But I am running into two issues:
1. When I go to build my LP for the unsub page (for the new domain), it still is pulling my original domain (and CNAME) and then when I try to do a redirect from there....I can't. (See below)

2. The other issue I am probably missing something on is: Can I track website behavior on both domains? They are two seperate domains, but you can get to each domain from each domain. I have added the tracking code to both domains, but it doesn't seem to be working.
As I mentioned, I am probably either missing something obvious, or I am not understanding something so any help would be greatly appreciated!
Thank you!
Monica