Drop Multitenant Database deletes the backup of the Tenant DB

Dear friends, recenty i was in a situation where i nneeded to delete a Tenant Database from a HANA system version 122.11. This simple step, brings a mayor problem. The drop of the Tenant Database deleted the /backup/data/DB_SID and /backup/log/DB_SID directories and its content. Then i could not recover that database to other system or to other Tenant Database at the time of the dropping.

In the documentation ther was not about this, or i did not see it.

Do you have a similar experience droping Tenant Databases.?

Thanks and best regards.