HI Dave! Good to "e" you again!
Method was to option click, then try to draw a line... It will ask if you want to UNLOCK that layer...
It was hit and miss whether this would work or not.. often, even if you option click on the stretchy line, it might make CONSTRUCTION ELEMENTS (or whatever that other layers is) the default...
Voila!
Duane
Visual Frontiers
AC25 :|: AC26 :|: AC27
:|: Enscape3.4:|:TwinMotion
DellXPS 4.7ghz i7:|: 8gb GPU 1070ti / Alienware M18 Laptop