I can't find one of my Fences

View was set to Visible only on mouseover.  I work with to monitors and fences in each.  When I updated by display driver it shifted all my fences to one monitor.  I rearranged the fences to the correct monitor, but one was missing.  I made all of the ones I found visible and moved them around to try and find the missing fence.  Is there a way to make all fence visible at the same time?