Hello,
It looks like you're "fixing" a minor issue with a broken import here - see https://community.openstreetmap.org/t/tagless-points-and-lines-in-greenbelt-md/97992 .
When you detect stuff like this (a way without tags not part of any relations) it's probably worth flagging it up somewhere rather than editing it further).  Your change here will make the DWG's eventual revert harder.
Best Regards,
Andy Townsend, on behalf of OSM's Data Working Group.