The database is compatible between v1.x and v2.x. There is no conversion process.

Except: the play_count/last_played data format has changed. There is no conversion process for this either -- the counts will be reset to zero.

You can go back and forth between v1.x and v2.x without any problems -- except for the dynamic data, as mentioned.

We are not aware of any catastrophic bugs in v2.x that would require you to reload all 30Gb.

-- roger