ADuC842 now reports itself as an ADuC843 with WSD

I have a design with ADuC842 that has worked for many years.  Recently after using this ADuC842 several times, it now reports a WSD error 6 when attempting to download new code.  I also notice that the MCU now reports itself as an ADuC843 device.  What happened? Is there some DATA bytes that I inadvertently erased that might cause this problem?

Here is the resulting string that is captured in HyperTerminal window when the MCU is reset with PSEN held LOW:

ADI 843   V212

This used to say:

ADI 842   V217

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    •  Analog Employees 
    on Aug 2, 2018 3:23 PM
    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,
    EZ Admin
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    •  Analog Employees 
    on Aug 2, 2018 3:23 PM
    This question has been assumed as answered either offline via email or with a multi-part answer. This question has now been closed out. If you have an inquiry related to this topic please post a new question in the applicable product forum.

    Thank you,
    EZ Admin
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