Affirmative, my 2020 Ascent was part of the recall.What you are describing may be related but outside of the formal recall process. If your vehicle was identified as part of the recall, there is a very detailed specific process all dealerships are required to follow. what you describe above is not that process.
Is your vehicle part of the recall? If it is, ask the dealership to provide the test results. the results would indicate whether it passed or failed. Passed would indicate a simple reprogramming would be done. Failed would indicate a new transmission.
You can read on this forum or go to the NHSTA website to determine if your vehicle was recalled and to read the documents describing the issue and detailed solution.