I have consulted with our developers who explained that this is not supported for the moment and advised to issue a feature request.
Here is the PITS item where you can track the progress of this request:
Note also that when planning for releases, we are always going through the feature requests in PITS and taking decision based on votes.
I'm using Sitefinity 7.2 and want to connect to Salesforce as part of my development. I'm having the same issue as described in the thread. I want to connect to 'test.salesforce.com' instead of 'login.salesforce.com'. I can't find the configurtion for this, is this feature still not added? Need help ASAP on this.
Has this issue been resolved yet? All the links in this article are dead and we also need to be able to connect to a test instance of salesforce.