EExcelview, field with default value and filter not working

Can i ask you all some question.

I have a problem with my EExcelView export result.

I have a field with a default value (it is filled by its value if it’s left empty).

I don’t know why, only the row that contain this default value can appear (not with other row).

I tried to view result in grid, and i found that the filter is not working. Also, in the filter box of the field with default value, it is filled by its default value (maybe this is why only the row that contain this default value can appear). But it is cannot be change.

I don’t know what happen actually, besides in the first time it can work properly.

Please, help me fix this problem?