要点
What matters
Google 原文 4 月发布、6 月 11 日修订：DSA 的自动迁移开始时间已延至 2027 年 2 月；ACA 与 campaign-level broad match 仍从 2026 年 9 月开始。旧摘要仍可能把三者混在一起。
Google’s April announcement was amended on June 11: DSA migration now starts in February 2027, while ACA and campaign-level broad match still start in September 2026.
范围与限制
Scope and limits
这是与本月账户管理有关的旧公告提醒，不能写成今天新发或所有账户已完成迁移。8 月 20 日另宣布的跨活动预算／ROI 实验，也只承诺在 9 月推出。
This is a current-month operational reminder, not today’s launch or proof every account has migrated. An August 20 announcement separately schedules cross-campaign budget/ROI experiments for September.
编辑观察：如何用到工作中
Editorial note: putting it to work
先查账户通知，再登记受影响活动、匹配设置和文本定制状态。试验期间保留对照组与修改记录；不要因读到自动迁移就同时大改预算、素材和落地页。
Check account notices, inventory affected campaigns and preserve a control group and change log. Avoid changing budget, creative and landing pages simultaneously.