Fixes a stock return issue where reversing a picking operation could incorrectly reset related packing steps to waiting. After the correction, only the returned move is unassigned, so the next warehouse operation becomes available when the replacement picking is confirmed.

TASK : https://www.odoo.com/web#id=12333&view_type=form&model=project.task&menu_id=3942&action=327
PAD : https://pad.odoo.com/p/r.vUhLiJK4oVJQWcFG

A back-office note on customer statements is no longer shown on the customer-facing website. This keeps internal guidance out of the frontend and improves the clarity of customer statements.

**Issue**: https://www.odoo.com/web?#id=669273&view_type=form&model=project.issue&action=963&active_id=681&menu_id=4720

A sentence is displayed in backend and shouldn't be displayed in frontend.