I'm automating the process of creating Trados Studio projects locally, then uploading them to GroupShare via the REST API.

When uploading I first of all create an empty project using this API method...

This returns the ID of the created empty project. Then I create a local FileBasedProject object, create a package from it, then upload the package to...

This works - the server-based project does get published.

However, if I want to do anything with the local FileBasedProject then I face a problem: It's ID is not the same as the project on the server. And the project's Id property is read-only, so I can't update it.

I tried opening the project file, updating the Guid attribute on the root element...

... and then reloading the project - here's the code I used...

private static void UpdateProjectId(FileBasedProject project, Guid newId, Reporter reporter)
{
   const string projectFileExtension = ".sdlproj";
   const string projectIdAttributeName = "Guid";
 
   var projectInfo = project.GetProjectInfo();

   var path = Path.Combine(projectInfo.LocalProjectFolder, $"{projectInfo.Name}{projectFileExtension}");

   XDocument xProjectFile;
   using (var fs = new FileStream(path, FileMode.Open))
   {
       xProjectFile = XDocument.Load(fs, LoadOptions.PreserveWhitespace);
   }

   var attrGuid = xProjectFile.Document.Root.Attribute(projectIdAttributeName);
   if (attrGuid != null)
   {
       attrGuid.Value = newId.ToString();
       xProjectFile.Save(path);
   }

   project = new FileBasedProject(path);
}

However, when I call project.GetProjectInfo().Id after calling new FileBasedProject(path) I still see the previous Guid value - even though I can verify that the physical file does now have the new value.

So I took another look at the API reference and saw this method...

Perhaps that id variable will allow me to specify the ID of the empty project?

Unfortunately it returns a 500 (Internal Server Error), and I can't see anything recorded in the log files relating to this error.

So what should I do? I have a local project, a corresponding server-based project, but their IDs are different. How can I use the ID of the server-based project against the local project?