I am confident should work just fine
Should be inter-operable, even with allowing
latest designs of system databases to flow freely... I have 6.5.6,
7.0.2, 8.0.x, 8.5.x and 9.0.x Servers in our development domain and works
just fine...
Obviously, you would want to due as
much validation as you can before production if you can and get on that
Business Partner to catch up to 9.0.x ASAP. :)
Feel free to let me know if you run
into any problems... jpaganet@us.ibm.com