I have a strange issue: if I search for documents that have not been modified for 2 years, I will still find documents that have been modified in 2014. Obviously, this is unexpected and unwanted.

I've used advanced search for this, resulting in the following query: Write<=1-1-2012

Any ideas what may cause this behavior? Thank you for your help!

I have a strange issue: if I search for documents that have not been modified for 2 years, I will still find documents that have been modified in 2014. Obviously, this is unexpected and unwanted.

I've used advanced search for this, resulting in the following query: Write<=1-1-2012

Any ideas what may cause this behavior? Thank you for your help!

Edit: I'm using sharepoint 2010 by the way...