Managing changes in input parameters during GH file read for custom C# GH_Component

[Dani_Abalde]

Ups sorry I misunderstand you, ignore my last comment. You have to mark the old version of the component as obsolete and create a new one with another component ID, instead of replace the code as you did.

How to handle input/output definition changes when a component gets updated in a new version

Nope. Do not do this. Once in the wild, the inputs and outputs of a component (be it number or type) may not change for it will break IO as you see here. You must mark the old component as obsolete and create a new component with the appropriate input/output layout. You can provide an automatic upgrader as well if you want to make it easy for users to replace obsolete components with the new versions, but do not mess with the existing layouts.