I want to delete old file from Glacier storage by doing backup and set Delete versions older than 1 day from backup date. However still files from previous dates are in there. Am I doing something wrong of my thoughts are completely mistaken?
There is a possibility that files, in fact, have already been deleted from the Glacier. Please synchronize the repository (go Tools > Options > Repository > Synchronize Repository) for Glacier storage account, and check out "Backup Storage" tab again.