Slitherine

In the Low Countries a 8.8 cm FlaK 36 is available as an auxiliary unit. A useful weapon, in the first turns against enemy aircraft, in later turns effective against tanks. The transport of that auxiliary unit is a SdKfz 251/1. But when you buy it as a core unit the only transport option is a SdKfz 7. Why that difference?

The Sdkfz. 7 was introduced with a patch after the Vanilla Campaign and some of the GCs already had been released. Before that patch you only had the standard transports available for the "Acht-Acht" ( and for the 17 cm and 21cm artillery as well). But the scenario designs weren't patched.