UAssetManager::GetPreviousPrimaryAssetIds

function Engine Since 4.22

#include "Engine/AssetManager.h"

Access: public Specifiers: virtualconst

Description

Reads the redirector list and returns every previous Primary Asset Id that now redirects to NewId. This is the reverse lookup of GetRedirectedPrimaryAssetId.

Caveats & Gotchas

• Useful for migration tooling that needs to find and fix up old save data referencing renamed assets, since it enumerates all known former names rather than just checking one.
• OutOldIds is not cleared automatically in every code path — pass in an empty array to avoid mixing results from a previous call.

Signature

virtual void GetPreviousPrimaryAssetIds(const FPrimaryAssetId& NewId, TArray<FPrimaryAssetId>& OutOldIds) const

Parameters

Name	Type	Description	Default
NewId	const FPrimaryAssetId&	Current Primary Asset Id to look up prior names for.	—
OutOldIds	TArray<FPrimaryAssetId>&	Filled with every previous ID that redirects to NewId.	—

Return Type

void

Example

Find all former IDs for a renamed asset C++

FPrimaryAssetId CurrentId(FPrimaryAssetType("Item"), FName("Sword"));
TArray<FPrimaryAssetId> OldIds;
UAssetManager::Get().GetPreviousPrimaryAssetIds(CurrentId, OldIds);

Version History

Introduced in: 4.22

Version	Status	Notes
5.6	stable	—

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