Retention policy

[Samfuel]

I would like to create a retention policy that will automatically delete files from preservation hold library after defined period (but keep those files in document library). Is that possible? I find out that when i exclude sharepoint site from retention policy, almost all data are deleted from preservation hold library. Is it some feature or how that would happened? Thanks for answers.

[#2]

So when excluding a site it will delete files in preservation hold, as you says that it shouldn't keep any file. So that's by design.

You need to create a policy in your retention policy and tag those files with that period using sensetivity labels, then they will be deleted from preservation hold after that period