Smart split

[hubaishan]

I hope to include new feature in JOSM, smart split when split a closed way (area) and this closed way have tags must be on area. I hope JOSM alert the user if he want to create a multipolygon relation and copy area tags to it and include the new splits as outer members. This will be a good feature.

for example: I have a closed way (area) tagged as coastline and an island, I split this way to tow or more splits. a msgbox will reguest me to confirm moving area only tags to multipolygon relation contain the splits as outer members the tag (place=island, name=* ....) will be in the relation only the tag (natural=coastline) will be in the all way splits

[simon04]

Closed as duplicate of #8709.