I am trying to migrate from Jenkins to bamboo. We are using the default jenkins importer tool in bamboo to migrate the jobs, but when we point importer it to the jenkins_home folder it shows only a part of the builds that are available on jenkins. When we downloaded the import_logs we observed that the importer was unable to access the "config.xml" file under the jobs directory.

We have tried to fix this by disabling the "Project based security" under each project.
We have also tried to run importer by disabling the Matrix Authorization in global settings.

But all the above attempts failed to display the jobs to be migrated.
The exact error message in the importer_logs that is displayed is shown below

--------------------------------------------------------------------------------------
Job name: <job-name>
SEVERITY: FATAL
Exception while reading data from /opt/jenkins2/jenkins_home/jobs/<job-name>: hudson.util.IOException2: Unable to read /opt/jenkins2/jenkins_home/jobs/<job-name>/config.xml
--------------------------------------------------------------------------------------

Kindly propose a solution to this or else I ll have to manually create jobs(~150) which is preposterous.

Thanks in advance !!