Download Siemens hardware issue (Simatic)

Hi,

Something weird in simatic:

Hardware differs. So I downloaded the hardware config form the s7 hardware configurator after save and compile. Then I could go online without warnings.

But when I do a complete code comparison, the SDB differs ?
So I downloaded the SDB.

Now the hardware config can go online without warnings in the hardware configurator and the SDB is equal.

Is it normal ?

The SDBs do not only contain hardware configuration, it also contains communication and connection information (ex: from NetPro), for example.

PS: I've found even saving and compiling the hardware config without downloading produces the offline/online comparison warning. It might be generating a new checksum, even though everything else is the same.