[UPD] Use analytic tags to link incomes/expenses to budget lines

instead of a direct budget_forecast field

account_budget_forecast/models/account_analytic_line.py

@@ -6,4 +6,16 @@ from odoo import models, fields, api
 class AccountAnalyticLine(models.Model):
     _inherit = "account.analytic.line"
 
-    budget_forecast_id = fields.Many2one("budget.forecast", store=True)
+    timesheet_entry = fields.Boolean(
+        help="Technical field to identify analytic lines created from timesheet vies",
+        store=True,
+        default=False,
+    )
+
+    @api.model_create_multi
+    def create(self, vals_list):
+        lines = super(AccountAnalyticLine, self).create(vals_list)
+        for line, values in zip(lines, vals_list):
+            if line.project_id:  # applied only for timesheet
+                line.timesheet_entry = True
+        return lines