Hello!

The project I'm working on has several UDPs I made. Back then these products hadn't been confirmed to be the ones we'd be using, so I named them all under the manufacturer name "Placeholder". But now they have been confirmed and I want to change their manufacturers and model numbers in the UDP wizard.
As far as I know I'm supposed to right-click on the UDP, click on Edit Product, change the manufacturer and model number, delete them from the drawing, and drag in new ones. It works for the model number, but no matter what I do the manufacturer stays set as "Placeholder".

How can I rename those UDPs' manufacturer names to their real names? Is it even possible? What am I doing wrong?