With the release changes, this KBA will be updated.
You want to migrate some objects but cannot find them.
SAP S/4HANA Cloud
Reproducing the Issue
In the Migration Cockpit
Some objects are no longer supported in the tool.
Check KBA 2596400 for the available objects.
2596400 - Migration objects available in the Migration Cockpit
For example, there is no plan to build up a data migration object for Production order.
KBA , CA-GTF-MIG , SAP S/4HANA Data Migration Cockpit Content (LTMC) , Problem