Ability to save layers into a semi-stable file format (geojson/osm etc)

[watmildon]

I am doing some collaborative editing using geojson files backed by github as our "todo" layers. When saving a layer, the objects in the file are written in a seemingly random order. Is there a way to get JSOM to write a file that will have somewhat more sensible diffs? We're making fine progress but if there's something easy to do I would love to know about it! I am happy to change file formats or add extra tagging if that helps.

I have attached an example file. To reproduce:

• Open the file as a layer in JOSM
• Modify one field on an object (say OSM_Status)
• Save into a new file

Expected
I would hope there's a way to have the diff of the two files just be the one field.

Actual
Essentially everything is marked as diff which makes things a bit more of a hassle when reviewing progress.

[watmildon]

Example trails file