Any way to view external relations that relate to the current sketch.

When attempting to suppress a feature that is being referenced by
another features sketch via a relation, the following error is shown:

You attempted to change a field that is currently locked by a design
table.... Blah blah blah

The second feature that has the sketch that relates to the first
feature is design table controlled. Whether the design table is locked
or not, it does not matter, you get the same error. The solution is to
find the sketch with the relation that is referencing the feature and
sketch you are trying to suppress. The way to do this that I can think
of is look at the parent child window to see what its relationships
are. It would be nice however to see these relations that are referring
to it in the relations window in the sketch. You can check the sketches
external relations but not relations from other sketches that are
referring to it. Maybe this could be added in a future release. Correct
me if I am wrong but I see no other way to find external relations that
are referring to your current sketch but by the parent child window.
Now in an assembly, mates are seen no mater what part you choose, you
see any mates referring to those parts, it would be nice if sketch
relations operated this way too.