If the app sets multiple cookies in one Set-Cookie header using HTTP::header value Set-Cookie would work fine. If the app sets multiple cookies in multiple Set-Cookie headers only the last Set-Cookie header would be parsed and updated for any domain rewriting that needs to be done. If the domain of the cookies isn't updated, the client would potentially not send those cookie(s) on subsequent requests.
If the workaround doesn't work for your scenario, the fix is to upgrade to 10.x. Regardless, it would make a lot of sense to upgrade to 10.2.x as there have been a lot of fixes and new features added since 9.x.
Aaron
Nimbostratus
