RFC: If a relation has wikidata tag hinder deletion of relation

[katpatuka]

Case: someone removed all but two members of D300 highway route in Turkey (​https://www.wikidata.org/wiki/Q7603864) but at least the relation hadn't been deleted.

So I got the idea: if a relation would have been deleted too it would have been much more difficult to rollback the deletion and/or recreate a new relation with the original members. But if relations would be connected via wikidata item a error msg or at least a warning msg could popup hindering the easy deletion of relations.

[gaben]

If it's

• intentional, then removing the wiki tag bypasses the check
• unintentional, then use reverter plugin, but in all cases look for deleted relations in the upload dialog.

[GerdP]

JOSM already warns when you delete a relation, no matter what tags it has.

[katpatuka]

But if a wikidata item additionally has the reverse statement OpenStreetMap relation ID (Property:P402) set, which implements a more important connection between OSM and WD/WP, it should IMHO be made more difficult to delete that relation.

[GerdP]

I've no idea why JOSM (or any other editor) should treat such a relation (or any other OSM object) special. If there is a good reason to delete a relation why should it matter if it has a wikidata tag or wikidata refers to it?
Users have deleted all kinds of objects in the past. It is expected that an important object will be restored soon enough.