Thanks @Michael_Campbell_RedPepper and @TomG for your responses (I've accepted both as @Michael_Campbell_RedPepper describes what the (very clunky) process is) and @TomG has provided a workaround. Any idea if Qualtrics are going to (re)introduce the ability to query a response by Id in a single API call? v3.5 perhaps?
Already have an account? Login
Enter your username or e-mail address. We'll send you an e-mail with instructions to reset your password.
Sorry, we're still checking this file's contents to make sure it's safe to download. Please try again in a few minutes.
Sorry, our virus scanner detected that this file isn't safe to download.