Hi,
Using 16.3, when editing a datafile to increase the 'Increment by' value, the Max Size is greyed out by default. If you apply changes without touching Max Size, it becomes UNLIMITED instead keeping the original value (even if that value is the one you can see in the pop-up window).
Regards,
Hi Freddy,
Thanks, I see that. I thought I had fixed for 16.3.
I'll fix it.
Edit: It seems that the fix I was thinking of was for beta, not 16.3. It is already fixed in the current beta, which you can get here.
-John
Weird, can't see it in the current Beta change log 
Thanks anyway!
Really? I see it. Look again. 