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Announcement about System Migration in Sophos Central

When I login Sophos Central, there is message highlighted to orange today.

the message says " Because we implement the system migration, some licensing operation will be unavailable at the first week of October."

"you would not activate/deactivate licenses."

Does it mean that we cannot add/delete any devices to Sophos Central at that term?

Originally, it is announced by Japanese and the message above is a sentence that i translated to English, so i'm sorry if there are misleading in my question.