Hi Leonard, no problem!

Also one other note - if you need to just extract a particular edge and have it as a normal "standalone" curve, you can do that by selecting it and using Copy + Paste.

But if you want to end up with a sequence of them joined into a longer curve, you don't have to do that first, you can just use Join directly on them.

Also if you just want to use one individual edge as a rail or profile curve or something, you can just select it and use it the same as you would use a regular curve.

- Michael