Full Image Backup Window and Archive Window

I have my full image backups for “Backup Every 60 days”. It works well. I set an archive for “Every 60 days” and the window is ,,,.

Issue is, it never auto-archives. Does the Backup window and the archive “Every xx days” have to overlap or it does not archive?

Alternatively, could I delete all the full backup images other than the first (well beyond 60 days ago), which would trigger a new full backup image and then archive would work?

I’ve got this working quite well in Incremental File backups (daily backup, every 7 days archive, window, ,,*,6 to do the archive on Saturdays.