>Only when sparse is set to .t., if set to .f. changing the inputmask only affects the current row. The problem I have is I can't get this behavior to work at the the time of setting up the form. Only when you move to the column and actually change rows does it function ok. Tried doing this via a loop and forcing the afterrowcolchange event, but it still resets after all the init methods fire.

Probably you should force the grid to change the rows with a loop with KEYBOARD "{DOWNARROW}"
statements, shouldn't you?
It should be placed into the init event, I think.