# Upgrading from CCS v1.x MiVoice Office 400 CCS uses a brand new MySQL database, just like OIP. When upgrading an Aastra 400 CCS v1.x system up to v2 you can import your existing v1.x database into your new v2 database. The sync works by creating a new v2 MySQL database and then importing the data from your old v1.x database. Click the start button and the sync will start, or wait for a second and it starts automatically. Syncing a small database will take just a few seconds, but if you have a large number of historical calls in the v1.x database, it will take some time to import this data. There is no bulk import option, each call record has to be imported individually.