Redirect after API_EditRecord

Greetings, everyone!

I'm at my wits end trying to get a redirect to properly fire in a Formula URL button. I'm using the URL as a "Submit" button that changes the phase of the record, then I want the app to redirect to a report. All I can get is a redirect to the app homepage which is not intuitive and undersirable.

Here is the URL Formula:

var text submitURL = URLRoot() & "db/" & Dbid() & "?a=API_EditRecord&rid=" & [Record ID#] & "&_fid_34=Items&apptoken=<token hidden>";
var text redirectURL = URLRoot() & "db/" & Dbid() & "/a=q&qid=7";

$submitURL & "&rdr=" & URLEncode($redirectURL)

Can someone help me figure out what's wrong with this implentation?

Thank you!