Hi,

When running the migration on a war file that contains an exploded osgi bundle the class files and jar files within the exploded bundle are migrated but the manifest file is not.

An example of the war archive layout with an exploded osgi bundle could be

WEB-INF/
WEB-INF/bundles/
WEB-INF/bundles/com.example.service/
WEB-INF/bundles/com.example.service/META-INF/
WEB-INF/bundles/com.example.service/META-INF/MANIFEST.MF <--- not migrated
WEB-INF/bundles/com.example.service/lib/
WEB-INF/bundles/com.example.service/lib/com.example.code.jar <--- migrated

For bundles that are not exploded, the manifest along with classes and jar files inside the bundle are all migrated

WEB-INF/
WEB-INF/bundles/
WEB-INF/bundles/com.example.service.jar <--- everything is migrated

From looking at the code of the class org.apache.tomcat.jakartaee.ManifestConverter the issue appears to be that the check for migrating a manifest will only work when the manifest file is at the root of an archive because it expects to find the parent folder name in the entry name, e.g. "META-INF/MANIFEST.MF", but when running on an exploded artifact then the file name for the entry will be a path inside the parent archive, e.g. "WEB-INF/bundles/com.example.service/META-INF/MANIFEST.MF" from the example above.