Crop Rotation - Harvest Keystone

Can someone please help me understand how the new Harvest Atlas Keystone Crop Rotation work?

From the patch notes:

"

Crop Rotation, which grants "Harvest Crops in your Maps contain only Tier 1 Plants" and "Harvesting Crops in your Maps has a chance to upgrade the Tier of Plants of different colours".

How will it work?

Say I pick blue crops then will my crops be randomly changed to yellow? Also it says upgraded so the tiers of the crop would be higher than 1 or not? As it also says that the maps contain only tier 1 crops.

From what I can tell, as written, this is how this would work:

The map only starts with tier 1 plants.

Harvesting a crop will give crops you haven't yet harvested on that map (that aren't the same colour) a chance to upgrade tier.

So for example if you have four crops, you could harvest two yellow and one red crop and end up with a tier 4 blue plant in your final crop if you got lucky and it upgraded each time.

Possible for T4 plants, but it the likelihood of increasing the tiers still has yet to be seen. It'll probably be easier to get a T4 outside of Memories, but you'll get fewer seeds overall.

This is only useful at league start for white/yellow maps.

When you got full atlas and good build and can run harvest on juiced t16 maps. Old method is better.

I dunno, seems pretty good to me, not sure if it is better than heart of the grove, but I wouldn't be suprised if it was