If you are on non-reporting probation, that is still active probation. A DUI arrest is a violation and the state could move to revoke. Also, there is an obligation to report those new arrests while on probation. The revocation would be limited to any time that you have left on probation unless it was under a First Offender Sentece whereby the court could resentence on the felony and revoke you on the balance. There cannot however be a retroactive revocation.