invoiced service order

Hi there.

I just have this problem in the service module of navision. Is there any way that i can view the invoiced service order? When I do post the service order, it is not visible anymore. I believe it is not completely deleted for when i run the service order document they are still there in the preview, and in the administration module, there is this function delete invoiced service order.

You guys might know something about this, any feedback on this is highly appreciated,

Thanks very much.