The easiest way I can think of is the following:
- Duplicate the study with the properties you want to use (right click on the study and press "Duplicate".
- Rename the duplicated study. Select al the model entries (e.g. Go to Geometry ribbon and press the third icon in the secon raow of the "Selection" section) and delete them. Now your model is empty but all the properties intact
- Select "Add an existent model to the study" (The Insight button/Open/Add - menu combination). Select the study with the corrct geometrical model. Now you have the study with the parameters completely copied from the first study but with the model from the second study that was I believe you wanted.
P.S Please take into account that if you need to reselect a material then the Temperatures of Melt and Mold might change to the recommended for the new material. You might want to the change them back - it is just two numbers. No other process parameters change if you reselect the material.