The only thing I can think of is if it is a single 'internal elevation' marker rather than a standard elevation marker.
With internal elevations you have to select the extent line and stretch that - not the actual marker line.
Otherwise with standard sections and elevations you should get the stretch option in the pet palette when you drag the end of the marker line.
The reason the Pet Palette show up might be because the Pet Palette somehow moved to a part of the screen where it is now not visible.
You can try set the Palette Positions in the Work environment back to its default and then the Pet Palette should become visible on your screen for sure.
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I got it work. Actually I have clicked on the limit line of the elevation and that's why I could not see the nodes. The line we talked about is invisible on my project for some reason. I need to click on the middle of the side line to select it.
Thanks all again
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