I just upgraded to 4.4 from 4.3, and the installation automatically uninstalled the old version - so far so good.
But ... when I try to 3D print from Fusion 360, the CURA selection no longer works.
A quick check in the registry shows that STL files are still linked to 4.3 (see image attached)
I can get round it by selecting "Custom" in F360, and pointing at the app manually, but it's not a "smooth" as it was (see image attached)