I can't be bothered to do all the research as to what the Net Change is for R3482 between these two versions of the software but I can imagine that there are very large changes. There may be new Processing Options. However, I wouldn't expect a problem of this nature.
Do you think it is a technical middleware problem betwen 8.10 and Db? Or have you checked all the Processing Options and Data Selection between the Versions in Xe and 8.10?