id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
21211	Missing warnings in modifying partial downloaded data with some tools (e.g. splitting ways)	segubi	team	"If I delete an item in an area outside the boundaries of downloaded data (or especially if I download subsets of the data via overpass) I get a warning, that these may be part of a relation.

The same warning has to be given if one splits one way, because josm doesn't check (for example during the uploading process) whether the newly created way should be included in eventual parent relations.

The result is that routes get interrupted without warning.

I checked the tools and suggest:

The logic and structural consistency can be disrupted with the following tools, therefore the warning should at least added in:
- split ways
- reverse ways
- disconnecting nodes from ways (it may also interrupt routes with connecting ways which are not visible)
- merge nodes (produces conflicts)

Maybe it could be also advisable for the other tools which are able to destruct the geometry of dependent items:
- Align nodes in line
- Distribute nodes
- Orthogonalize shape
- Mirror

It is already included in: 
deleting items, combine ways, simplify ways, unglue ways, join areas

Align nodes in circle behaves differently: It gives no warning if I use it with incomplete data of an overpass-download, and it is completely disabled if I try to adjust a way with a node outside the downloaded data area. A warning (in both cases) as in the other tools would be more appropriate.
"	defect	new	normal		Core	tested		gui tools warnings