Managing Legacy Campaigns

A legacy campaign should be judged by its current job, not by its age. Most real Merch accounts contain campaigns that were created before the seller had a clean system.

Some were launched as tests. Some were built around old product groups.

Some used naming conventions that no longer make sense. Some mix product types, seasons, match types, or product stages.

Some were created quickly during a seasonal push. Some were copied from an old structure.

Some were never reviewed after launch. These campaigns are not automatically bad.

A legacy campaign may contain useful history, profitable search terms, proven ASINs, low-bid winners, seasonal signals, or defensive value. But it may also contain old assumptions, hidden waste, unclear targeting, duplicated traffic, weak products, or budget leaks that have survived only because nobody wanted to touch them.

Do not protect a campaign because it is old. Do not delete it because it is messy.

The seller’s job is to classify it. A legacy campaign should be treated as something to audit, not something to fear.

The question is not, “Is this campaign old?” The better question is, “What does this campaign currently do for the account?” If it still has a useful job, the seller may keep it. If it contains useful signals but messy structure, the seller may extract the useful parts and rebuild them.

If it spends without a clear purpose, the seller may reduce or pause it. If it duplicates cleaner campaigns, the seller may merge or retire it.

If it contains no useful history and no current role, the seller may archive it after recording the reason. Legacy cleanup should therefore begin with caution.

A seller should not open an old account and pause everything that looks imperfect. That can destroy useful history, remove profitable low-bid traffic, interrupt seasonal structures, or hide the source of winners.

At the same time, the seller should not leave everything active simply because the campaign once worked. Old performance does not guarantee current value.

The first step is to identify the campaign’s current role. If the seller cannot explain the role, that is already a finding.

A campaign may have started as discovery but now behaves like a confused scaling campaign. A seasonal campaign may still be active out of season.