in the migrations that I have done from AS 2000 to AS 2005, we usually have had to recode some of the dimensions and calculated measures. Besides depreciating some features, the architecture of AS 2005 is not directly migratable from 2000 AS cubes. While you are not receiving errors, I might suggest running sql profiler on the AS DB Server. I have run traces against AS and the DW to see if there's something fishy going on. Profiler supporting AS 2005 is new btw:>