I have fields which contain parent and child calculations. In other words, a row may  contain a parent field which should summarize the rows of child fields which are directly below. I have found that this calculation often disappears. I cannot make it reappear unless I go to the field under "field manager" and click the "recalculate  parent and child calculations". This is darned inconvenient and also a bit transient, since the calculation often disappears when I recalculate another field. I'm assuming that I'm missing something. Can anyone help me. I'm trying to set up estimates for my business and this is a show-stopper.