oracle index key compression issue on 10g due to upgrade to 11g

Dear SAP gurus,

Right now, I have just upgrade my old database server from 9i to 10g (10.2.0.4). I want to run index key compression to compress some index.

Is there any issue if I am upgrading my Oracle 10g (with index had been compressed) to Oracle 11g (11.2.0.2) ??

Any suggestion ?

Thank you.

Ardhian