Thanks for the response. No apologies needed, mapping contributions like yours are obviously a big help for the project.

About big changesets:
If everything is mapped correctly, then there is no problem, I guess.

However, if mistakes are made (which we're unfortunately prone to as humans), then smaller changesets certainly make it easier to isolate and understand these mistakes and potentially perform rollbacks without destroying a lot of correct mapping as a side effect.

----

I would think that -- ideally -- one changeset should be not more than a few buildings, each in the same block or neighbourhood. In practice, this is often not the case (including my own changesets), but that's what I have in mind when i try to map "cleanly".