I don't use the KS to access the MAS database directly. Rather I buy the KS Access license to get at MAS via pass/select through queries (which is basicly what KS does with their (KLA?) linking functions. By using Access, it is just one less database to have to deal with, we can write queries in Access to do the heavy lifting plus if you ever want to use a second database, you don't have to buy another license. BA was such a PITA to deal with, I cut deals with my BA users to move them to KS.