API2.0 - Subclassed Controls

I am updating a piece of code written by someone else here on the forum…
and got 150 of 151 deprecatations solved…

But the code contains a subclass of a SEGMENTEDCONTROL… this needs to be changed to a SEGMENTEDBUTTON for API2.0

So I did that… but every single control that inherits from this throws the deprecation warning still

If I search the project in the IDE for “SEGMENTEDCONTROL” I get zero hits…
but if I look in the XML, there it is…

But no why to safely and properly change it