I do not believe 2./502 was combined with 503 until 14 Jan, which, unfortunately, is not covered in the documents I have. Also in the beginning of the time covered a good number are still in transit to the front.
I do like going through these original documents, to bad I cannot afford to get any of my own, they cost $125 per roll from the NARA, so I have to rely on the goodness of others to put them up on the web. They are really a wealth of information.
John Winner - Sturmmörser/Jagdtiger/Ferdinand-Elefant