embeded spread sheet plotting

I inserted a excel file as a embedded spread sheet, it always goes with the DGN file and works very well. it is much easier to be edited than a microstation chart. the problem is when I tried to plot it on a A1 or A2 paper, there is a blink window on the paper covers my drawing. If I use A0 or A3 paper, then I dont have this kind of problem.. What is the cause of this problem? Can anybody help me to sort out this problem. Thanks.