Yes, I prefer "Track local file deletes" and I will keep my old ECBB files. My internet bandwidt is very limited and I know that feature will be only enable on my new files

Thank You

I received an answer from support

When I modify an old plan to enable this feature, there is no prompt for warning about disableing file name encryption

My question, my old backup are now one part with CBB and an other with ECBB.
My backup are broken or not ?

Support answer that all is ok for my bakcup but "Track local file deletes" is not enable on old part on ECBB folder

7min after :
Encrypt file name disappear when "Track local file deletes in backup storage"

So :
If a backup plan is created without ""Track local file deletes in backup storage" and with file name encryption.
After "Track local file deletes in backup storage" is activated
what's happen ?

Thank You