Unit Symbols - Not Consistent?

[MisterMark]

I only have Salerno 43 but I'm sure this is an issue on many other titles... but can anyone explain why some unit symbols on the map are not consistent with the unit symbol displayed in the unit box?

In the screenshot attached labeled 'Grille' we see the selected unit on the map (indicated by a pink arrow) use the 'regular' self propelled artillery nato symbol, but in the unit box it the symbol is the 'heavy' self propelled artillery nato symbol.

Furthermore, the 'heavy' self propelled artillery nato symbol is represented in screenshot attachment titled 2DSymbolsMag (identified again with a pink arrow), which is from the master map symbol file in the game directory for the magnified view.   So if this symbol is available to be used, then why doesn't the game correlate and use the correct symbol for the magnified map view?

-Mark

Maybe I should be asking a better question...  is it possible to edit one of the values in the units file in the game directory to tell  the game which symbol to use from the 2DSymbolsMag file?  Or is the symbol designated by editing parameters via the pcoob editor?