Manny, asere. I don't really mind if I get my hand slapped on explaining this one.
Recently, they were contacting people in certain spots on the allocation list because of what I'll term supply related issues. In that instance, if you were willing to order a non-Heritage or a non-Carbon Series car right away, you'd possibly get pulled forward.
This time, they are asking customers if they would be interested in moving up should the opportunity present itself due to shifting windows for when cars have to go to various markets. As a totally fictitious specific example, if you were asked to move forward and were supposed to be in July 21, totally hypothetically and in no way in reality, that could be because they may now need to deliver cars to Europe in that window and need people here to fill an earlier time period. Hypothetically.
At the same time, when they are calling people to see if they are interested in moving up, should the opportunity present itself, they are also asking generic preference on Heritage/CS/Standard. I now see why this would be confusing and why people may take it as "Do you want to move up AND do you want a Heritage OR a Carbon Series." And perhaps there is just additional miscommunication occurring.