[Mobhack]

Possibly it was a saved game started way back in the days of V1 and left lying on the disk since then?. OR it was started some time back, with an incorrectly patched game (subsequently patched up).

A new OOB set will not overwrite a saved game's unit data, if the game was started prior to the change.

The Encyclopaedia data will change of course. Same effect happens with edited units in a scenario - the Encyclopaedia can only use the standard data (found in the the OOB file) for the info page.

Now - first post, the OP states that it was human v computer.
Then he changes his story to it being 2 people on two computers.

My guess is that someone in the pair has most likely not patched up correctly. That will most likely be the one that can buy this long-obsoleted unit in a test purchase of a Japanese force. Determine between yourselves if one or both of you can buy the snipers unit with 2xtype 97 sniper rifle slots. Whoever can, needs to reinstall properly.

Cheers
Andy