All Finish Grade Contour Lines are missing???

[gpsurveyor]

Hello & HAPPY THANKSGIVING,

While working on a project, the Finish Grade contours have dissapeared in the view, but text for contours is still intact, and layers are on. Any ideas here folks? Thanks so much for the help out there!

[chcdigger]

are the contours poly lines? if they are not they will dissapear, also make sure the line type is not "hidden".