Deployment of permissions for TaskEngine (Security Realms?)

We try to deploy several tasks from one MWS to another by using Deployer.

Unfortunately the deployed tasks do not recognize their original permissions.

We have added the Security Realms for the tasks to the deployment set.

We are on wM 9.5 SP1.

Are we missing some artefacts here?

Please advise.

Regards,
Holger