Hi Martin,
If you select the Resource ID (row number) in the Resource Usage view
you may copy and paste the information from file to file. However,
Project will not consider the copied resource to be the same resource as
the original and you may end up with overallocations from overlapping
assignments in both project files.
I don't know if you have looked into the idea of a resource pool file,
but that may be worth pursuing. Project Help has some great information
as does Mike Glen's excellent series of articles on MS Project. Mike's
article may be found at:
http://project.mvps.org/mike's_tutorials.htm
See particularly Article number 17.
I hope this helps. Let us know how you get along.
Julie
Project MVP
Visit
http://project.mvps.org/ for the FAQs and additional information
about Microsoft Project