Can't delete lines from family

[d.stairmand]

I am doing some vehicle tracking curves & have some lines that i want to remove from the family file - but its not letting me remove them? (They are the group of lines near the origin)

any suggestions on how to get rid of stuff that wont delete?

[eddy.lermytte]

Try this;
"Copy to Clipboard" all lines except the group of lines
Open new Detail Rfa
"Paste from Clipboard" into new Detail Rfa.

[Munkholm]

Or simply just select the lines one by one, and set their length´s to 0.1 mm - Revit can´t deal with short lines like that, and therefore suggest that you delete the element instead

[d.stairmand]

Cheers guys - both worked great

[studioearl]

I know this is an old thread, sorry for reviving it, but I didn't find many other answers in my search. Anyways, I had a title block family that I tried all the solutions and the lines would not go away. I finally came to the conclusion that these (border) lines probably were part of the default from the family template originally used. My solution since I couldn't delete/ or make them so small Revit would delete them was to put a visibility parameter on them that defaults to off. Works for me, however always open to other ideas. Most importantly, I hope if someone stumbles across this feed it helps them.