Note 8.5 Client Archive Policy Issue

Hi everyone

i have a issues with some of our notes 8.5 clients

i have implemented a archive policy on some of our lotus domino servers. and the mail boxes are getting the policies and lotus notes 7 clients are working fine

but we have a few lotus notes 8.5 clients which are getting the policy for a little while and then the client reverts back to what they used to have

when i check the users mail file you can see the archive settings are pointing to the correct location, its just the 8.5 client isnt keeping the settings

i have tried deleting the polices out of the local names.nsf and allowing DCC to bring down new copies of the polices.

also our certifing server is domino 7.0.1, i dont know if that is the cause, but the users mail files are located on a Domino 8.5 server

has anyone run into this issue before, or know if i am missing anything ??