Eric,
I probably did not make myself clear.
The link I provided is not the one used in the calculation but the one you should use in a reminder.
I've tested it and it works: ( See screenshots below)
In the proces I've used we have 2 reminders when a survey is filled.
The second reminder is the one to the Analyst.
It is in the reminder itself we put the URL ( as you can see in the below screenshot)
When a Survey is completed this is what we get:
And that link brings us to the Survey that was taken.
I think this is the best solution for you.
I've only provided the calculation suggestion in case this would not work.