As Chazz's reseller, I have already replied to his personal email. However, given that the question is posted here, and Chazz directed me to this thread, I will take the opportunity to say a few things publicly that are relevant, both to his case, and to tech support as a whole. I'm adapting this posting from the email I sent to Chazz.
We have used this method successfully (bringing in Layouts from another project, complete with linked Drawings, through the Project Chooser). It does work in general, and should work for you.
That being said, if there is an issue when you try this, it could be specific to the actual file that you are trying to work with. You should try this with another file and see whether it's successful. Perhaps the file with all the details in it has a problem. You could try to bring in a sheet of details from another recent project (instead of from this particular PLN) to see if that works OK.
Let us know how it goes.
FYI, Graphisoft North America recently announced a new policy for technical support. As of January 1, 2009, Graphisoft handles "first-line" tech support, which means that users now are supposed to call 800-238-3992 or email
support@graphisoft.com (instead of their reseller) with technical support problems. Graphisoft will refer "training support" (how-to questions and other advice, training and consulting) back to resellers who may opt to charge for the consulting services.
Graphisoft technical support is restricted to cases in which ArchiCAD does not perform according to the documentation. In your case, it would appear to qualify, since the program should be able to import Layouts from one project into another without undue delay. If your problem persists, please call or email Graphisoft and they will start a tech support case and work to resolve your issue.
Priority tech support for ArchiPLUS subscribers still is in place. With all tech support now handled by Graphisoft, active ArchiPLUS contract-holders will be served ahead of non-subscribers. Since you are covered by ArchiPLUS, you will get a response sooner than others who are not under contract.
Bobrow Consulting Group will continue to be available for email responses to questions without charge, as well as short phone calls. We have started to request permission to bill for consulting for additional assistance and trouble-shooting.
If you have any questions or comments about the new policies adopted by Graphisoft, please let us and/or Graphisoft know.