Hello Bob, and welcome back to OSM.
Can you explain a bit more what you mean about "delete unwanted lines" here?
The deletion of e.g. https://www.openstreetmap.org/way/42250174 seems to be of something that, according to the available imagery, still exists.  Is it really not like that any more?
Best Regards,
Andy


(see https://nrenner.github.io/achavi/?changeset=161360974 for the full story of this changeset) 