Okay, I've called almost ALL of these, and the updated ones are in blue and gray (they were previously non-highlighted cells, indicating still in Midlothian, TX)
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So, I found out today that order status may show 3800 (when you search the order number); if they search the VIN, it could show 4300 (which is what happens for me). Anytime Linton tracked my vehicle over on GMInsider, it showed 3800, but the dealership and GMC Chat always showed 4300, which didn't make sense...but they're not inter-changeable, apparently.
Anyhow, seeing this gives me hope, despite the fact that my executive resolutions person told me that as of yesterday, my vehicle is still in Midlothian, TX. Maybe they really are working to get these out!