Function transition 

async fn transition(
    store: &MockSuotarStore,
    generation: &str,
    ids: &[String],
    to: SubmissionTarget,
) -> Result<Value, CommandError>

Moves submissions to where the importer and the send would have left them. Attainments minted from a submission are replaced wholesale, so a later transition never leaves an earlier one’s attainment behind.