Export tool is based on ORM method `_export_rows`. The method has special processing of m2m fields when user checked *Import compatible* option [1]. Before this commit the negative value of `import_compatible` parameter wasn't passed when data are exported in grouping mode. This led to empty values in m2m fields. STEPS: * Order some products via website and pay via wire transfer * Open Orders menu in backend * group order by any field * expand group with the order * add field *Transactions/Acquirer/Display Name* [1]: https://github.com/odoo/odoo/blob/b28c44a38698018ebbbc420f6567c17b2b97c279/odoo/models.py#L894-L914 opw-2864737 closes odoo/odoo#110151 X-original-commit: 6647ac83467207f4f4ef23aac96ebaf5333b967b Signed-off-by: Ivan Elizaryev (iel) <iel@odoo.com>