We set up our subscription to delete items that are 1,190 days old. this Workspace change was done a couple of days ago, however, items that were deleted more than 1,190 days are still showing in recycle bin.
This help page has details about how to set this functionality up: Configure Admin Capabilities
There is a job that runs to delete these recycle bin artifacts every day for all subscriptions. If there are a lot of artifacts to delete, it may take this job a few days to get through all the backlogged artifacts. Artifacts in closed projects that are in the recycle bin will be deleted too.