2.10.4. Creating Intel® Quartus® Prime Projects for Multiple Netlist Files
Depending on your design methodology, you can create one Intel® Quartus® Prime project for all netlists, or a separate Intel® Quartus® Prime project for each netlist. In the standard incremental compilation design flow, you create design partition assignments for each partition in the design within a single Intel® Quartus® Prime project. This methodology provides the best QoR and performance preservation during incremental changes to your design. You might require a bottom-up design flow if each partition must be optimized separately, such as for third-party IP delivery.
To follow this design flow in the Intel® Quartus® Prime software, create separate Intel® Quartus® Prime projects and export each design partition and incorporate it into a top‑level design using the incremental compilation features to maintain placement results.