The reason is hotlinks – by design this is the name of the host project, but modules are read-only, they can’t change their contents’ parameters.
Could you elaborate on the problem to solve? Why do you place the information to compare in the filename and a text file? Maybe other workflows are possible: embedded text file in the project, properties, library globals, model view options, etc…
Péter Baksa
Library Platform, Software Engineer
GRAPHISOFT SE