We have office 2003 with existing profiles configured not to use cached echange modeand use pst files. Have a package of office 2010 using the Office Configuration Tool to use Cached exchange mode on the outlook upgrade. If there is profile that has no pst files in the data files section, the upgrade is fine, the used cached exchange mode is greyed out and checked. If the profile had pst files in the data files, the upgrade links the pst files but the use cached exchange mode is blank and greyed out. We need this to be checked and existing pst files linked.