Compatiblity issues between AD forest at 2003 function level and a child domain at 2008 function level

I am managing a Child domain in a much larger forest.  The forest has been preped for AD 2008 and the domain has been preped using adprep as well for 2008.

The forest domain controlers are all running Server 2003 at a 2003 function level.  We want to update our DC's to 2008 Controllers in the child domain.

My question is: are there any known issues with rasing the function level of a child domain to 2008 while the forest is still at 2003 function level?  I can't find any issues on-line but I don't want to make a change until I am sure the two function levels will be compatiable.

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Mike KlineCommented:
I've not heard of any issues of having a child at 2008 dfl while the forest is at 2003.  This is actually a common scenario in a bigger multi-domain environment because most of the time not all the children are upgraded at the same time (usually staggered)



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