URL Mapping (redirect) that includes a wildcard not working properly

Site URL: http://www.leadingindicator.com

I am trying to set up a redirect for visitors that come to my site. The url contains a string of characters at the end that must be added to the redirected URL. Here is what I have right now in my URL mapping settings (not working):

/go/[name] -> https://www2.mysite.com/go/[name] 301

This is an example of an actual URL that needs to be redirected:

https://www2.mysite.com/go/flex-360?guid=ae85acad-9d73-4909-8a42-85735a53ad4b

The text after '/go/' will change based on the visitor and therefore must be included in the redirected URL.

FYI: My main site (the one hosted by squarespace) is www.mysite.com.  ww2.mysite.com is NOT hosted by Squarespace