APM Rewrite and MS Sharepoint

I've been working on the same thing. I know the rewrite would be a problem for SharePoint so I opt not to use it. I have publish my web app directly with an access profile but I'm having trouble opening and editing document in Office. I'm trying the persist cookie but the last thing that I also have in the works is multi-domain SSO. I have a couple of web applications and I would like to SSO into. One of the reason for the cookie based persist because MS Office opens a different connection back to the server.