Good luck getting any volunteers next time.
Too true.
In the past I lived in Arizona but did a lot of extensive consulting in California and my former employer was asking me to spell out all the days that I had worked in other states and I gave them nothing. I have better things to do than triple my tax preparer fees and feed sponges and illegal aliens in California.
It is tough for states to differentiate between personal travel and business travel unless you are on their radar so I made sure to never get on their radar.