István,
Thanks for the reply, and that was exactly the issue.
What makes the process not intuitive is the fact that, after the project is copied, the project's settings list it as "Accessible." Once I saw that, I figured that the project is able to be accessed by anyone... there isn't any indication that I need to specifically add users to the project. Because I need to do that, the project really isn't 'accessible' to anyone yet. Maybe there's a better way to list the status of the project at that particular moment.
But, anyway, thanks for the help! It'll definitely save me time instead of having to save a .pla and then teamwork it again!
Bill
Bill Szustak RA
Principal, Springboard Design
ArchiCAD 25, macOS Ventura 13.4.1