When an art folder moves, every asset imported from it fails Reimport with “Source file not found”, on every machine that syncs. The editor fixes that one asset at a time through a file picker.
Source Path Relinker is a UE 5.8 editor plugin that surveys the whole project without loading assets, indexes a directory you name, and matches each broken source to its real file by the MD5 the engine recorded at import. When two files carry that hash, it refuses and names both. A match by filename alone is reported and left alone unless you pass -AllowNameOnly.
-Audit -FailOnBroken returns exit code 5 when any source path does not resolve, so it can gate a build.
-Apply validates every row before touching anything, copies each file it will write into a journal, saves, then reads each package back from disk and checks the stored path resolves to the file the hash proved. -Undo=<stamp> puts every journalled file back.
Windows, editor only, full C++ source included. The code was written with AI tools and tested in the engine. It is $14.99 on itch, 30% off in the itch Halloween sale until 4 November.