Hi @oswalmarketing20  , may be you could try with importer data tool https://transactionpro.grsm.io/qbo  . You could read the related article : Export import   or  Import data  . Video tutorial : Video 1  or  Video 2  .

Comment back if having other questions. Have a nice day.

@oswalmarketing20 

You may visit the references as provided by @gayatriluthfias20 

Another option, consider purchasing a 3rd party conversion service.