Disappearing numbers

Could anyone tell why and how I can change my cells show I can have my numbers appear.

I have a 45 number column (K) setup with the following formula:

=IF(OR(ISNUMBER(FIND($B$7,H9,1)),ISNUMBER(FIND($N$7,H9,1))),"",H9)

This gives the standard "0" until numbers are pasted in column H.

I pasted 30 numbers and BLAM! the "0" disappears no sorted numbers appear.

This just started today. I have two other areas I use this formula and everything works just fine.

Does anyone have clue why this is happening just in the column. I've checked whether the column cells were text or numbers and it was numbers on both incoming group and column H.