Title is misleading because of length, so I'll go into detail.
If I have a map, and it says "OMGUPDATE", and it is a map that is not mine, then it should automatically update all diffs when I enter. I've had instances where I enter a map, I re-mod, I yell at the mapper for not fixing my errors (such as unsnapped notes), but it is actually because I did not update.
Now, for your own maps, there are many instances where it'll go "omg ned 2 updaet", but you're still working on stuff, and don't want to upload it.
If I have a map, and it says "OMGUPDATE", and it is a map that is not mine, then it should automatically update all diffs when I enter. I've had instances where I enter a map, I re-mod, I yell at the mapper for not fixing my errors (such as unsnapped notes), but it is actually because I did not update.
Now, for your own maps, there are many instances where it'll go "omg ned 2 updaet", but you're still working on stuff, and don't want to upload it.