yes i also think we can't really seperate TEST and ODI performances completely..
BD is still a developing team.. thats why performance in one version of the game (Test or ODI) influences the other naturally. Even for the stronger teams.. it is true!!
For example.. the constant improvement in the Test performances probably influenced the whole team positively and which gave us a very fighting ODI series vs. the WI'ans.. and even gave us a win vs. the ZIM's.
It's all about being morally boosted or demoralized..
good show in one version of the game surely helps the other... as the reverse is also true.