thanks for the reply.
The code I am using to save is the following:
String PathName = PathTemp + name + "_dQdV.opj";
if (org.Save(PathName) == false)
Console.WriteLine("Failed to save the project into " + PathName);
PrintOutput("Successfully created Origin Project: ", name + "_dQdV.opj" + "\n");
org = null;
I just tried what you recommended and indeed Origin is saving it properly as opju by just changing the suffix in the filename
That was a lot easier than I expected.
Thank you very much.