Hello!

I think it would be very helpful if segment history included data from previous "iterations" of that segment, when a segment was created by merge or split.

Right now, the history starts anew any time there is a new segment ID, but I would imagine it should be fairly trivial to develop a backend mechanism that, any time a segment is split or merged, merges the history of the previous segment ID into the new segment's history.

This is useful not only diagnostically but also to catch cheaters on the map, who today can split and merge segments at will with no evidence.

It is very easy to envision how this would work with a segment created by split, as the history of the previous, longer segment can simply be displayed before the "Segment created by split" line, perhaps with the old ID of the previous segment appended.

For segments created by merge, obviously there are multiple histories to incorporate, but I think it can still be done in a sensible way from a UX / UI standpoint, as follows.

Right now, the history of a merged segment starts with "Segment created by merge", and the data is lost. In a better implementation, perhaps it looks like this: "Segment created by merge of [segment ID 1] and [segment ID 2]".

Then, at the time of the merge, the old history of the other two segments are merged into the new segment as well, with the old segment ID appended.

So, let's say you have segments 123 and 345 from the basemap, each with a few edits before, named "Main St", connected by a node, then you delete the node to merge the segments into segment 54321 (newer segments have much higher IDs!). Right now, the history would be simply,
Mon May 01 2017 by sketch(6) / Segment created by merge

Let's say the other segments have history like this:
123:
Wed Dec 14 2016 by EladOfTheBerg(2)
Updated Geometry
GEOMETRY
Changed from [this] to [this]
Thu Jun 23 2016 by WilliamHMacy69(1)
Updated Primary street name
PRIMARY STREET NAME
Changed from Maine Street to Main St

345:
Fri Aug 26 2016 by RickyBobby666(3)
Updated Lock level
LOCK LEVEL
Changed from 1 to 3
Thu Jun 23 2016 by WilliamHMacy69(1)
Updated Primary street name
PRIMARY STREET NAME
Changed from Maine Street to Main St

In the improved implementation, the history for segment 54321 would read:
Mon May 01 2017 by sketch(6)
Segment created by merge of 123 and 345
Wed Dec 14 2016 by EladOfTheBerg(1) (ID: 123)
Updated Geometry
GEOMETRY
Changed from [this] to [this]
Fri Aug 26 2016 by RickyBobby666(3) (ID: 345)
Updated Lock level
LOCK LEVEL
Changed from 1 to 3
Thu Jun 23 2016 by WilliamHMacy69(1) (ID: 123, 345)
Updated Primary street name
PRIMARY STREET NAME
Changed from Maine Street to Main St

If you really want to get fancy, the "123" and "345" in "Segment created by merge of 123 and 345" could be little hover buttons like with the geometry changes.

By: sketch
Link to original suggestion: https://www.waze.com/forum/viewtopic.php?f=1525&t=225928