First of all I just want to say that Attribute Assistant is great! I think this is ESRI at its best, it was relatively easy to set up, and it saves me a lot of headache and time working with our network utilities. However, everything is working correctly other than the "Update_From_Edge_Field" and "Update_To_Edge_Field" functions.
In my table of contents I have the wastewater mains (pipe) listed and displayed multiple ways in the TOC. If the mains are shown on the map in a layer that does not have a definition query, the "Update_From/To_Edge_Field" function works correctly (I add or edit a point and the new/updated point fields are passed to the main). However, if the main is displayed in a queried field, nothing happens. It doesn't seem like it should matter because the tool is referencing the root data, not the layer in the TOC.