Prevent combiding ways where relations are not loaded

[mdk]

I got a huge problem when I merge two ways where JOSM din not download the ralations. This cause that some other relations has deleted ways as members.

This can happen if you download the members of a relation and combine two ways which are outside the boundig box (which means that their relations are not loadad).

Here is an step by step example:

1. start JOSM
2. File->download object...relation 1556696
3. combine (c) two ways at the lower left beginning of the primary highway (110009332 and 88954933)
4. download a boundig box including both ways
5. There is now an error "The was 1 conflict detected"
6. look at relation 1556773 (residetial with 17 members) which still contains the way 110009332 with 0 nodes!