Just an update if esri staff happen to be following or notice this post and can help.
It's actually many layers that are not being displayed in the Attribute Table widget. I have another set of data representing Sanitary information, and another set of data representing Storm information, and each of these has many layers not being shown in the table.
Of the Storm Water Dynamic Service, 6 of 7 layers do not display in the Attribute Table - constantly says "No features in current map extent".
Of the Sanitary Water Dynamic Service, 6 of the 8 layers do not display in the Attributes Table - constantly says "No features in current map extent".
Still hoping for a fix - must be something minor, but hidden....
Steve