Apple apparently released two versions of the Apple Watch Magnetic Charging Dock. The part numbers are different: MLDW2AM/A (old) and MU9F2AM/A (current as of April 2019). The model numbers are also different: A1714 (old) and A2086 (current as of April 2019). Can someone tell me what the differences are between these two versions of the charging dock? I have not been able to find any article online discussing this... very odd. Though the external design appears to be the same, it is obvious that there are some major internal hardware changes to mandate a manufacturing badge change.