A catalog copied from another computer (e.g. Windows to Linux) records
root folders at paths that don't exist here, so every original was
imported as missing. When a root's absolutePath isn't a folder, use the
relativePathFromCatalog Lightroom stores for roots on the catalog's
volume, resolved against the catalog's folder, and report the remapping
as a warning.
Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
