You must file an non-resident Oregon tax return.  In TurboTax, allocate to OR only the portion of your income that you earned by physically working inside OR.  OR will refund any excess withholding to you.

I have not attempted doing my taxes yet as I am still waiting for documents. I do not understand when you say 'allocate to OR only the portion...'. Is this done with a separate form or merely entering data that will ultimately conflict with my W-2? I have the # of days I was physically in OR so getting my total for OR state taxable income is easy but, as I mentioned earlier, how/will I be  able to enter these #'s into  TurboTax without any red flags popping up? Thank you for your help

You are correct that, if your W2 and your tax return do not match up, a red flag is likely to be raised, especially if you e-file your OR return.

My suggest is that you edit Box 16 of your W2 so as to reflect your actual OR income, then print and mail your OR return along with a note of explanation.

How do I change my W-2 info in TurboTax? (intuit.com)

Thanks so much!