Color matrix 601 -> 709 output problem?

[jokris]

I notice that when I have set color matrix to go from 601 -> 709 and load another file, the output info at the bottom of the Filtering tab page says that it will output Matrix: 601, not Matrix: 709. I have to uncheck and check the box in order to make it say Matrix: 709.

If I don't do this, will the color output be 601?