Solution : https://service.sap.com/sap/support/notes/1298547 (SAP Service marketplace login required)
Key words : 
correction instructions related, tax tables, entries generated, table a346, terms brazil, j_1b_migrate_tax_rates reason, solution apply, sap release, conditions, prerequisites
Related Notes : 
       
| 910834 | Valid-to date not udpated in condition header via J1BTAX | 
| 903749 | Brazil : Date of Condition record not updated via IDOC |