DP 6.21 SQL 2008 Microsoft TDE

 Hello all....one of my clients is looking for options to back up their SQL 2008 Data Bases, they use Micorosft TDE to encrypt the DB's, I have found references to SQL-TDE support in DP 6.1x platform support matrix doc, however the client is using DP 6.21 and there are no references to TDE in the support matrices from DP 6.2 onwards...any clues on why TDE is not even mentioned in the platform support matrices from DP6.2 to DP8?