gistfile1.txt

--- a/mis_builder/models/mis_report_instance.py
+++ b/mis_builder/models/mis_report_instance.py
@@ -374,6 +374,12 @@ class MisReportInstancePeriod(models.Model):
                     )
                     for m in many_ids:
                         filters.append((filter_name, "in", [m["id"]]))
+                elif filter_name == 'analytic_account_id':
+                    # filter also on children analytic accounts
+                    analytic_account = self.env['account.analytic.account'].browse(value)
+                    analytic_ids = self.env['account.analytic.account'].search(
+                                [('name', 'ilike', analytic_account.name + '%')]).ids
+                    filters.append(('analytic_account_id', 'in', tuple(analytic_ids)))
                 else:
                     filters.append((filter_name, operator, value))
         return filters