It definitely will accept 11x17" charts on sheet media. I'm not sure about the optimization of 17" roll media for both chart and re-submitting for reading is going to work. I usually used optimised for size and it worked as such. They can be re-submitted in larger sizes just the same , I just don't know for sure for 17" which are optimised for size only. Apparently you found it doesn't work for size and remeasure.