- Edit the "Article" class
we have the following attributes order, including order number:
Title - 10
Short Title - 20
Author - 30
Intro - 40
Body - 50
Enable comments - 60
image - 70

if now we try to set "Enable comments=70" (repeating the "image" order number) and then press "OK" button, we have the information that the class was not stored because we have a duplicate attribute placement (this is correct).

The problem is that order now is completely different than the one we started with:
We now have

Title - 10
Short Title - 20
Author - 30
Enable comments - 40 (was 60)
image - 50 (was 70)
Intro - 60 (was 40)
Body - 70 (was 50)

and if we, by mistake, press the "OK" button again, this new order is stored.