Hi Patrick, If you want we can go to the complete process together. Email me at pascal.beauregard@graitec.com when would be the best time for you next week and we can go thru the BOM Import Export process together. It is essentially done thru the BOM editor. The BOMs,the prototypes, the special parts and the standard parts go thru a different migrating process then the ASTORs for now.You have ASTORs in three different folders also:C:\ProgramData\Autodesk\Advance\DataC:\ProgramData\Autodesk\Advance Steel 2017\User2\DataC:\ProgramData\Autodesk\Advance Steel 2017\Steel\DataTalk to you soon.Pascal