Hello Chris, Thanks for this confirmation, I was getting errors when trying.
But does this behavior not undermine good programming practices?
So rather than modifying the existing ItemType, you copy the original and modify the copy.
The name of the copy would then also start with a company/client specific prefix.
Is there really no better alternative? Perhaps only for subscriberss?
As a note; I once ran into an error because I was able to SaveAs an Item but run into the maximum length of the name and hence was not able to create a copy. So the max length of a name can also be a limiting factor.