Exactly the same thing for me.
BW was BW2 (8th Jan)
but dealer emailed me and told me the car had been built and left the factory 2 days ago!
Now it is on stage 30 in the tracker JSON but QC on the website!
He says late january - early feb collection which works for me !
Funny some of the stage completions were in the future!
"data": {
"orderNumber": "xxxx",
"orderStatus": "30",
"deliveryDealerCode": "xxx",
"orderHistory": [{
"orderStatus": "24",
"statusDate": "2018-01-08T00:00:00+0000"
}, {
"orderStatus": "23",
"statusDate": "2018-01-06T00:00:00+0000"
}, {
"orderStatus": "22",
"statusDate": "2018-01-05T00:00:00+0000"
}, {
"orderStatus": "21",
"statusDate": "2018-01-04T00:00:00+0000"
}, {
"orderStatus": "20",
"statusDate": "2017-11-30T01:01:36+0000"
}, {
"orderStatus": "10",
"statusDate": "2017-11-22T01:01:27+0000"
}, {
"orderStatus": "00",
"statusDate": "2017-11-19T01:10:50+0000"
}],