Copy batch Text data to a new characteristic created in batch

Dear all,

We have created a new characteristic in batch classification class to have all the long text of batch from Batch Basic data 2 Tab.

Please suggest me a table through which we can copy the long text of batch in excel and upload the same through data migration(LSMW) in batch characteristic field newly created.

Or else please suggest me any other way through which the data can be copied of the existing batch.