If I understand your question correctly:;
You have an OpenSCAD file which you wish to use in the Parametric Model Maker (PMM), that script uses the OpenSCAD method Import, which is used to reference an external file and include it with your model.
Nope.
Despite my repeated requests to allow the designer to upload additional files for use of the Import method, they read that (likely while drinking alcohol p) and got confused. They added a feature that let the user upload a file from the users local machine and not by the designer.
You can learn about it here.