>Evan, I'm having a really similar problem with a grid based on a child table that is not refreshing correctly when I move the record pointer in the parent.
>
>The relations are set fine in the DE, but I don't have any set up for the grid based on the child table. What's the general rule of thumb for setting relations within the grid's properties?

I just want to state again that I prefer to use the grid for the relations. Other developers may prefer to use the DE. I find the grid to be more stable for the way I work. That said...

You need to set the following properties in the grid:
Childorder && index in child table with order for child recs
Linkmaster && parent table
RecordSource && child table
RelationalExpr && an expression that relates the parent fields to the childorder index