I have a customer that has an IPO V2 8.0(44), 1 DS30A, and 2 DS16A for Norstar phones. We are going to be doing an upgrade to 8.1. Will the DS modules upgrade along with the IPO? The reason I ask is because we had a lot of trouble with the DS modules when the system was installed. The last time the system was rebooted, it took days to get the DS modules to work. I just don't want to go through that again.