I am faced with a similar situation. I am moving from VA to TN, but will be [nearly] 100% teleworking from my TN residence with the VA employer.
A representative from the VA taxation department gave me this advice about the situation:
1) Am I surrendering my VA driver's license for a TN driver's license? If so, then:
2) Any income that I make while telecommuting at the TN residence will not be taxable by VA. However, if I travel to the VA employer for a few days throughout the year, then I will owe VA state tax for the number of days that I am physically in working in VA at the VA employer.
