Thanks for reply, guys. yep, this is a difference.
In EDB, some special buildings are placed after the reforms, such as saka(for saka reform), carthage1( for carthage reform), cataphract(for AS reform). And these buildings have weapon_siege capability.
But i can't find the relation between the reformed units and the special reform buildings in EDB. So I wonder how the reformed units related to the special reform buildings in EDB.