Hi Marion,
I think this can be done, though it depends on how you want to do this.
Is it the intention to copy the 2008-2009 courses and make them the 2009-2010 courses. In that case you neeed to select the update permissions option under Sysadmin panel > (CS) settings > copy settings > select Update permissions for Content System items and folders, including those in e-Reserves
Another option would be to move the (reused) e-reserves from the 2008-2009 folder into the new 2009-2010 folder and create new links to the 2009 - 2010 courses where needed.It depends on the version of Blackboard you're using if the links in the 2009-2009 courses will still work. Where there's a relative or absolute link to the e-reserves they will be broken, in case there's an xid (Xythos ID) link created the links should still work after moving content to another location. You need to investigate the links in the course to these e-reservers.
Assuming that you have to pay for each e-reserve I wonder how this will be done with the links to e-reservers in older courses. Is there stilll being paid for or will these e-reservers that are only used in the course 2008-2009 be removed and only reused e-reservers in the next year will continue to be available?
Henk