I have a backup chain which first backs up to a DAS device, then NAS, then S3 and finally Azure.
The first backup in the chain to the DAS has a schedule and retention policy and it executes a full backup once a month.
The next backup in the chain to the NAS is setup to run a full or incremental backup according to the type of this (DAS) backup plan. The DAS backup does not have a schedule, does have a retention policy and when the backup runs, the backup type is correctly selected based on the last NAS backup type - all good so far.
The next backup in the chain is to S3 and is setup to run a full or incremental backup according to the type of this (NAS) backup plan. The S3 backup does not have a schedule, it does have a retention policy but the backup always runs as incremental irrespective of the previous DAS backup type in the chain.
I'm probably missing something - any help appreciated.