Here's the scenario: I have two different data frames in ArcGIS (10.3.1). In both, a dataset is added from an Excel spreadsheet.
In one data frame (call it "Map"), a layer is created from x,y coordinates. In the other data frame (call it "TAS"), it is symbolized from the values of two different elements (think - local coordinates).
There's also a column called "ID" which is a unique ID.
I would love to know if there's any way of making a selection set in one data frame and have it dynamically update with the same selection in the other data frame (preferably two-way communication). So the problem is not only is it separate data frames but separate coordinate systems.