"The file does not represent an Application or is corrupted."
Can you advise on the proper method for migrating applications/jobs from version 12.0 to 12.2?
Release : 11.3.x/12.x
Component : ESP DSERIES WORKLOAD AUTOMATION (DE)
The proper method to migrate applications/jobs from DE version 12.0 to 12.2 is using the migration utility that is shipped with the DE Server 12.2. You can only use the import/export (imexutil) utility to move application artifacts of the same DE version. See the documentation for more information;
"We recommend that you use the import/export utility only between the servers of the same release. For example, you can import Applications from one 12.0 server to another 12.0 server but not between a 12.0 server and a 12.0.01 server. To migrate artifacts between the servers of different releases, use the migration method."