id	summary	reporter	owner	description	type	status	priority	milestone	component	version	resolution	keywords	cc
18959	JOSM should store and use the information that parents where downloaded	skyper	team	"Follow up from #18528, see GerdP in [ticket:18528#comment:19 comment 19].

Best would be to store this information in a new flag.

* Currently, JOSM does not store information that parent objects where downloaded which can lead to additional traffic.
* There a many situations where the download area is used to determine if all parents of an object have been downloaded which is not the best solution in many situations.

See #10999 for one example. (will add more)

I know this is quite some work and might need some time. Thanks in advance."	enhancement	new	major		Core