Convert Blank Formula Cell To Empty Cell?

I am using a IF(ISNA(Vlookup##,##,##)),"",(Vlookup##,##,##)) function, in order to remove N/A errors.

Is there anyway to convert the "" values to back to an empty cell without anything in it (i.e not text "", but empty as it was originally). I find that the file sizes are very large, when using this function, as data (although blank) is stored in each cell (i know this, because if I use cntr+arrow, it sees it as data, and not an empty area). I don't want to manually go through each cell and delete them as there is quite a bit of data (10000 rows , 2 columns, 30 tabs)