Switching from another CSS provider
If you're coming from another CSS provider, the process is the same — the switch just doesn't take effect immediately. After your confirmation, a period of up to 14 days runs before it becomes effective. Google notifies your current provider, who can shorten the period or waive it entirely (Google Help: Switching merchant accounts between CSSs). If you're coming directly from Google Shopping, there is no waiting period.
What happens during this time
- Your ads keep running as before. You don't need to pause anything.
- The advantage only applies once the switch is effective.
- During this period you can still reverse the switch and stay with your old provider.
- You cancel with your old provider afterwards, not before.
Don't cancel with your old provider first. If that assignment ends before ours takes effect, your account temporarily falls back to Google Shopping — with the margin that is deducted from your bid there.