I was looking forward to find a resolution on this post. Sadly, nobody has reported the issue as solved. I had the transmission serviced, changed the air filter, changed the sparkplugs recently and had the fuel injectors cleaned. Still, the jerking continues when the transmission does the first shift and forward, at constant speed and highway speeds does not happen. I am suspecting it having to do with the transmission somehow. I bought mine (2019 SEL 2.0) with 14000 miles and the jerking started at around 50K miles. It has now reached 90K. I don't know what else to try. I kind of got used to it and I love the way it drives, but I would like to have this fixed to have the perfect car. If anybody happens to get results with something, please share.