jQuery Grid Plugin - jqGrid

if i try to use 'gridDnD' with more than two Grids, it will not work proberly.

I want to combine 3 Grids together. I have tried it with the following code:

jQuery("#Grid1").gridDnD({connectWith:'#Grid2,#Grid3'});
jQuery("#Grid2").gridDnD({connectWith:'#Grid1,#Grid3'});
jQuery("#Grid3").gridDnD({connectWith:'#Grid1,#Grid2'});

it works to the point where I drop a row from "Grid1" or "Grid2"... the rowdata are not transferred to the new Grid

I have no idea what may be the error, because it works with 2 Grids.

Is it really a bug or am I doing something wrong?

greetings, shou