1.If the content is modified or deleted during the retention period, a copy of the original content as it existed when the retention settings were assigned is created in the Preservation Hold library. There, the timer job identifies items whose retention period has expired. Those items are moved to the second-stage Recycle Bin, where they're permanently deleted at the end of 93 days.
2.If the content is not modified or deleted during the retention period, the timer job moves this content to the first-stage Recycle Bin at the end of the retention period. If a user deletes the content from there or empties this Recycle Bin (also known as purging), the document is moved to the second-stage Recycle Bin. A 93-day retention period spans both the first- and second-stage recycle bins. At the end of 93 days, the document is permanently deleted from wherever it resides, in either the first-stage or second-stage Recycle Bin.
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