There is a new flag in EMS Administration Console named ‘Enable SL-Legacy Support’ which is enabled by default
Enable SL Legacy Support:
If you have migrated from BSS to EMS, you can send out SL legacy updates to your existing SL legacy key customers. They do not need to update the RTE to support certificate licenses.
This allows to manage SL-Legacy direct updates without changing to AdminMode. If you wish to change SL-Legacy to AdminMode you have to remove the flag.