but I don't think that can meet the demand.
When we save data in a table, there is an autoIncrement ID which is generated and which we must use to save in the second table without having to reload the form !
Like the user registration form (table jos_users, jos_group, jos_groupmap ...).
But I don't think this is possible with BF's integrator.
Besides, the BF user registration model does not use the intergrator to do this!
Maybe in a future version...