ID:150003 File <name> is a MAX+PLUS II Graphic Design File. Saving to this file now will overwrite it in Quartus format, which cannot be read by MAX+PLUS II

CAUSE: You opened a MAX+PLUS II Graphic Design File (.gdf) and attempted to save the file as a GDF. The Quartus Prime software is asking if you want to overwrite the file with the Quartus Prime format, making the file incompatible with MAX+PLUS II.

ACTION: Click OK to overwrite the MAX+PLUS II file as a GDF in Quartus Prime format or click Cancel to cancel the operation. If you want, you can save the GDF under a different name, preserving the format of the specified file.