This is a general answer...but generally, a DUI arrest while on Probation will raise a probation violation issue. Even if the court case for the new charge goes well, usually there would still be a probation violation hearing that can take place separate and apart from the new criminal charge. That being said, the better the result of the new charge, the better off you will be for the probation violation, either getting it dismissed, or minimizing penalty if the probation violation is found. I would highly recommend that you speak to a good DUI attorney in NV where the new charge is, and your attorney, or another criminal defense attorney in San Jose regarding the probation violation issue.
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It is impossible to predict the outcome, as my colleague suggests.
The fact that your PO did not violate you for the arrest is a good sign. Continue to comply in all other respects with your Probation, and make sure you have a capable attorney to represent you on your pending DUI/DWI. Many such attorney post here on Avvo, and this is an excellent source to find capable representation.
Good luck to you,
If you had an attorney on the felony case, I suggest giving them a call to make them aware of the current situation. I also suggest hiring a locally experienced DUI attorney for the Vegas case. Having an attorney will generally increase your chances of a positive outcome. Best of luck.
Everyone's answer is accurate, except that you need to recall that it is not the PO but the court who violates your probation. Unless aggravated, an out of state misd. DUI is not likely to result in any serious probation issues here.