Is BTRFS LUKS system drive backup encrypted by default?

[until983]

When i do the backup from within Linux installed on a LUKS encrypted BTRFS drive, and i backup self (same system drive), then resulting backup wile content will be decrypted or it is necessary to apply encryption https://helpcenter.veeam.com/docs/agent ... tml?ver=13 ? Possibly that backup wizard screen should explain/suggests this in case it detects that i am doing a backup of a currently decrypted LUKS system drive.