We are looking into this, but, just to be clear:
-The latest Scorecard did not change any results, only the view. It did add new samples to the Try Me option, though. But, the old ones remain, to show that the backend was not changed. Any change in the grade given for the old SITE 3 high scoring sample would have happened before the SITE 4 update.
-IG and Vocabulary Errors should not alter the score. Those are expected to be resolved before addressing SC issues. Of course, they are provided for convenience, though. There can be vocabulary related issues identified in the rubrics that would alter the results but these are not Errors. The rubrics haven't changed in 4 years or so, and are located here:
https://www.hl7.org/implement/standards/product_brief.cfm?product_id=534
If we could get specific, or more specific dates from either of you, as to when the score changed in the results, that would be very helpful. Thanks!
If you want, you can also check the source code, here: