Merging/combining Shared Parameters txt files into one

[Alban_de_Chasteigner]

Yes.

Create project parameters by using the exported Shared Parameters from a Family

The Revit API allows to set the GUID while adding shared parameters to the shared parameters text file. This requires the creation of a new custom node with the addition of a GUID input. [Create%20project%20parameters%20by%20using%20the%20Shared%20Parameters%20from%20Families]

But you can also do it with the UI.