SFM App Permissions can't be migrated through Migration tool. Every time a new SFM Transactions, Wizard, we need to manually give SFM App permission on new and existing SFMs.
When new Sandbox is created and during PROD configuration migration to thisSandbox, SFM App permissions are not migrated. We need to do this manually for each object. Most of the standard SFM Transaction and Wizards are disabled or access revoked in our PROD org. These will be visible in new Sandbox after Seed data downloaded and we can't migrate SFM App permissions but manually align to disable them.