Changing Agency Without Breaking Campaigns: What Survives
A Meta ad account created in an agency's portfolio can never be moved out of it. Google says account-level history does not exist. Plan the handover on that.
A Meta ad account created inside an agency’s business portfolio can never be moved out of it. Meta states this plainly: it will permanently be part of that portfolio, and cannot be deleted or transferred from it.
That single sentence decides more about your exit options than any contract clause, and it is decided on the day the account is created, usually by someone who is not thinking about the end of the relationship.
This page sets out what is genuinely permanent, what only feels permanent, and one widely believed loss that the documentation says does not exist.
The Meta structure, and why it is irreversible
Three options exist at creation, and only one of them is reversible.
The rule, verbatim. If you create a new ad account in a business portfolio, it will permanently be a part of that portfolio. This means the ad account cannot be deleted or transferred from the portfolio.
Option one: create. Whoever creates the account fixes its home forever. If that is the agency, the account stays with the agency.
Option two: claim. A permanent, one-way move into a portfolio. Once claimed, it is subject to the same permanence rule.
Option three: request to share. The account stays in its original portfolio, and access is granted to another. This is the normal agency arrangement, and it is the one that preserves your position.
What that means practically. Your ad account should be created in your business portfolio, and access shared with the agency. Not the reverse. This costs nothing at the start and is unrecoverable later.
What happens if you got it wrong. You are not locked out, but you are dependent. Access can be withdrawn, and you cannot move the asset. If the relationship ends badly, a new account is the only route, and a new account is an empty object.
The honest caveat on the pixel. I could not find primary Meta documentation stating how dataset ownership behaves in a portfolio transfer. Third-party summaries assert it follows the creating portfolio, which is consistent with the ad account rule, but I am not going to present an inference as a citation.
Google’s structure is more forgiving, and says so
The contrast matters, because advice written for one platform gets applied to the other.
On manager accounts, verbatim. Owners have full administrative access and data access privileges, but do not take data ownership or administrative rights away from client accounts. The client account still owns its data and has the ability to remove ownership access by unlinking.
What that gives you. A Google Ads account linked to an agency’s manager account remains yours. Unlinking removes their access and leaves the account, its history and its data with you.
The transfer process. Changing ownership is a change of administrative access via invitation and acceptance. Nothing is recreated, so nothing is lost.
Where the actual risk sits. Not in transfer, but in whether the account was ever yours. If the agency created a Google Ads account under its own billing and identity, you may face the same practical problem as the Meta case even though the platform mechanics are friendlier.
The rule that follows for both platforms. Whoever creates the account matters more than whatever the contract says about it. Create your own accounts, then grant access.
A new agency inherits a “damaged account history” from the last one. Google says the thing being inherited is not a thing.
The documentation, verbatim. There is no such thing as ad group-level, campaign-level or account-level Quality Score.
Where it appears. Under a heading in Google’s own guidance stating that how you structure your account does not matter.
What follows. Renaming campaigns, changing the number of ad groups, reorganising the structure: none of it affects Quality Score calculation, because Quality Score exists only at keyword level.
So the common diagnosis is wrong. “The previous agency damaged the account” is not a documented mechanism. If performance is poor, the causes are in the keywords, the ads, the landing pages and the bidding, all of which are inspectable.
The real loss, which is documented and narrower. Google’s editor documentation states that when you paste keywords into a new ad group, the keywords’ performance statistics, such as impressions and clicks, are not transferred to the new location.
Why that matters. Quality Score is built on historical impressions for exact searches of the keyword, compared over the last 90 days. Move a keyword to a new ad group and the statistics that feed that calculation do not move with it.
How to state it precisely. Google never writes “recreating a keyword resets its Quality Score”. It writes that the statistics do not transfer. That is the defensible version, and it is enough to justify not rebuilding an account that works.
What relearning actually costs
Three documented figures, and one common change that costs nothing.
On conversion changes, verbatim. Smart Bidding will take some time to learn, one to two conversion cycles in most cases, after any changes made to conversion goals or actions.
On calibration, verbatim. It can take up to three weeks or one to two conversion cycles for the bid strategy to calibrate to the new objective, and can be faster depending on the amount of conversion data present.
What triggers a learning status. The bid strategy was recently created or reactivated; a setting for it was changed; or campaigns, ad groups or keywords were added to or removed from it.
And the change that costs nothing, verbatim. Changing a target will not trigger a learning status, and will not reset anything Smart Bidding has already learned about your account.
Why that last one matters in a handover. A new agency adjusting target CPA or target ROAS is not resetting anything. A new agency restructuring campaigns into a new bid strategy is.
The eligibility thresholds worth knowing. Target CPA can be started with no conversion history, with performance evaluated over 30 days including at least 30 conversions. Target ROAS carries stated thresholds by campaign type: at least 15 conversions in 30 days on search and shopping, 30 in 30 days on video action, 50 per week on hotel campaigns.
What that means for a small B2B account. If you produce 20 conversions a month, a restructure that resets bidding costs you a full quarter before the strategy is calibrated again. That is the real price of a rebuild, and it should be argued about in advance.
Changing a target resets nothing. Changing conversion actions costs one to two conversion cycles. Source : Google Ads bidding documentation (2026)
The clock that runs during a gap
Audiences decay on a documented schedule, and a transition is exactly when nobody is watching them.
Search platform maximum. 540 days across display and search. And separately, if a segment is not used in campaign or ad group targeting for 540 days, it is automatically closed.
Customer match lists. Maximum membership duration of 540 days. To stay eligible, a list must have at least 100 members added or refreshed within the last 540 days.
Social platform maximum. People stay in a website or app custom audience for a maximum of 180 days. After 180 days they are removed unless they revisit.
What a six-month gap does. 180 days is six months. A website custom audience on the social platform is effectively emptied by a six-month pause, because six months is its entire documented lifespan.
On the search side it depends on your setting. The maximum is 540 days, but the membership duration you chose at creation governs. A list set to 30 or 90 days is empty after six months. One set to the maximum survives.
The action item, which takes ten minutes. Before any transition, check the membership duration on every remarketing list. If any are set below your expected gap, raise them now. You cannot retroactively re-add people who aged out.
And the retention change worth knowing. From 1 June 2026, reporting data retention runs 37 months for hourly, daily and weekly data, 11 years for monthly, quarterly and annual, and 3 years for reach and frequency metrics. Export anything finer-grained than monthly before it ages out.
Four items that are individually minor and collectively account for most handover incidents.
Automated rules survive. Since July 2021, a rule created by a user who no longer has account access continues running without any errors. That is good, and it also means rules nobody remembers keep executing.
Scripts do not. If the original author of a script is disassociated from the account, the script stops running but remains available. Someone with access must reauthorise it.
Promotional credits do not transfer. Any active promotional credits will not be transferred after a billing transfer completes.
And the human one. Conversion tracking, tag containers and integrations were often set up under an individual’s login at the outgoing agency. They keep working until that account is deprovisioned, then stop, with no error.
The audit that catches all four. Before the outgoing agency’s access ends, list every automated rule, every script, every tag container and every integration, with the account that owns it. Reassign or reauthorise each one while they are still there to help.
Why it must happen before, not after. Every one of these is trivially fixable with the outgoing team’s cooperation and expensive to reconstruct without it.
Eight steps, ordered so that the irreversible ones happen while you still have help.
Confirm who owns each account. Before anything else. On the social platform, find out which business portfolio owns the ad account, because that answer may be final.
Get admin access in your own name, on every platform, from your own login, and verify you can see billing.
Export everything. Full campaign history, conversion history, search terms, audience definitions, and reporting at the finest granularity you have. Data retention runs out; exports do not.
Inventory rules, scripts, tags and integrations, with the owning account for each, and reassign them.
Raise remarketing membership durations before the gap, not after.
Agree what the incoming agency will not change in month one. Specifically: no bid strategy rebuilds, no conversion action changes, no keyword restructures. Those carry documented relearning costs and there is no reason to pay them in week one.
Set the comparison point. Same period next quarter, not next week, for the same reason as any structural change.
And keep the outgoing agency reachable for thirty days. Contract it. The questions you will need to ask have not occurred to you yet.
Can a Meta ad account be moved to my own business portfolio?
Not if it was created inside someone else's. Meta states that an ad account created in a business portfolio will permanently be part of that portfolio and cannot be deleted or transferred from it.
What are the options then?
Three: create it, claim it, or request to share it. Claiming is a permanent one-way move. Sharing leaves it in the original portfolio with access granted, which is the normal agency arrangement.
Does my Google Ads account belong to the agency's manager account?
No. Google states that manager account owners do not take data ownership or administrative rights away from client accounts, that the client account still owns its data, and that it can unlink.
Is there an account-level history I would lose?
Google says no such thing exists. Its documentation states there is no ad group-level, campaign-level or account-level Quality Score. Quality Score exists only at keyword level.
So restructuring the account is free?
Not quite. Google's editor documentation states that pasting keywords into a new ad group does not transfer their performance statistics, and Quality Score is built on exactly those statistics.
What happens to my remarketing audiences during a gap?
Membership is capped at 540 days on Google and 180 days on Meta. A six-month pause with no site traffic effectively empties a Meta website audience, because 180 days is its maximum life.
Will automated rules keep running after the agency leaves?
Rules yes, scripts no. Since July 2021 a rule created by someone who lost access keeps running. A script whose author is disassociated from the account stops running but remains available for someone to reauthorise.
How long does bidding take to recover?
Google says one to two conversion cycles after changes to conversion goals or actions, and up to three weeks to calibrate. Changing only a target does not reset anything already learned.