Does fmAccounting Link (MYOB Essentials Edition) use ODBC or export/import of .txt files?
No. fmAccounting Link (MYOB Essentials Edition) makes HTTPS requests to the MYOB Essentials API to create/update records in your selected MYOB Essentials Business file. If successful the MYOB records are created/updated immediately without having to export and import .txt files or use ODBC.