If you are that deep into scripting I don't see any purpose in relying on QuickBase's redirect mechanism. Just control the whole process with script and you don't have to play guessing games or perform lots of experiments figuring out what these hidden parameters do on the back end.
There are a lot of remnants of techniques that might have been cutting edge in 2000 that are still in the code base. I can't image who would use a sentinel value today for just about anything. Redirect parameters? XML not JSON? The list is long.
Luckily we have excellent developers and product managers who are modernizing the product with help from the future.
