Backup Override did not run properly

Hi,

I'm running Networker 19.5.0.1 on 2 different environments. We are backing up dailies to data domains and monthlies to LTO7 tapes.

Both environment are scheduled create Full backups on Last Friday of every month. These full backups are then cloned to tapes for offsite backups. Every other day of the month are incremental backups; only the last friday of the month is full.

I am configuring/scheduling this through each job and using overrides. In the backup job, I set the period as "Weekly by day" and setup incremental for every day. Then, in the overrides pane I setup "full last friday every month". We've been running like this since the past 2 years with no issues. This is the same for all backup jobs and for both environments.

However, last friday (24th September 2021) was the Last Friday of the month and the override did not work. Incremental backups were taken instead of Full and this caused issue for the cloning process. This happened for both environment.

I am trying to figure out why the override didn't work for Last Friday but worked for the past 2 years. The logs indicate that an incremental backup was taken (level=incr); no sign of a reason why the override didn't occur.

The backups jobs configuration did not change since the last Full; only the clone job was disabled since I'm now cloning using Powershell instead.

I know this may be a complicated issue to troubleshoot, but I'm mostly looking for pointers on where to look.

Thank you,

Guillaume.