Merge Lines?

 From:  BurrMan
2978.2 In reply to 2978.1 
RebuildCurve. Type number of points for resolution. Check delete original when done.

The Merge is for those "Drill Down" edges on a surface that are not whole. So it you trim a surface, then drill down to its edge to use for "Blend" or something, and you see it is in 2 parts, you can merge that back to a single edge. It doesnt work for "seam edges".