Good morning everyone is a new user,
I use solidworks 2018
I can't understand why in the cutting list of a multi-body sheet part some parts have only 2 properties and not the whole complete list by default.
I started from a solid from which I converted faces into sheet metal. It seems strange to me that some sheets created with the same procedure have different properties (for example "piastra 4" and "piastra 5")
Welcome to the forum. Without seeing the file it's difficult to say for sure, but I suspect the bodies that show the whole list were created as weldments, using the "Structural Member" function, while the others were created with a different type of feature, such as a simple Extruded Boss/Base.