ControlButton in 3.10?

Hi, I’ve created a few subclasses of ControlButton in my project and use those throughout my code (which was originally built on version 3.4). Now that I’ve updated to 3.10, almost all still work flawlessly, except for one that simply has an image, no background and no label.

When I look for ControlButton in the 3.10 API, I can’t find it. Is ControlButton on the way out, and should I replace it with Button?

thanks