SalsaLabs data migration

I'm migrating contact data from Salsa over to EveryAction. Does anyone have ANY idea how to get comprehensive data exported from Salsa's system? I was able to export supporter data from the supporters tab, but I don't think it includes any group data (i.e. what group those supporters belong to, targeted/segmented lists). Is that all data that is lost?

If you have any experience with Salsa Classic or EveryAction or general tips and tricks about CRM data migration, please let me know!