Thanks to everyone for the feedback and suggestions. I ended up trying a number of alternatives in sample areas over a four week timeframe.
1) Dawn dishwashing soap and water. Limited success.
2) zaino trim finish. Worked, but the haze came back weeks later.
3) leather cleaner followed by leather protector. This worked very well, but would have been expensive to use on the entire car
4) Sal from Zaino recommended a White Nylon eraser. This was ultimately the fix. It removed the white haze completely. I followed the eraser treatment with Zaino trim protector.
Car looks great and has been washed a few times without the white haze returning.
Again, thanks for all your help!