Thank you, both @erfajo and @jacob.small
I never created any .dyf files, and seems like the upper linked topic is related with updates from Dynamo 1.x to 2.x? Or did I misunderstand that?
It’s 2.0.x to 2.0.z updates as well. It’s specific to people who make the custom nodes which increase the efficiency and effectiveness of Dynamo, so while it may not impact you from a ‘we don’t make our own custom nodes’ it would impact you if you use Orchid and a few other key packages.