Hi
See these changes in OI wont precede the price move. They follow the price move.
so this change in Oi - smart money logic always seems good on analysis or you see them working excellent on eod option chain pages.
you will a huge OI built up at a particular strike and think that market may not break that level as it acts as a support/resistance due to huge concentration of open positions. But it wont work like that. These levels change and even may change very dynamic. As market moves the strikes with large OI built up keeps changing.
But view from this OI studies can act as a confirmation.