Answer:

A producer’s enrollment can be adjusted but currently, this feature will only be available for producers without any existing data. Producers with a single empty enrollment year are able to be moved to a different enrollment year. All other producers will show this option as grayed out. 

When this feature is used. Users will see dialog that shows the producer’s current enrollment and the desired enrollment. The desired enrollment is the range of the project’s available enrollment years. Depending on the project’s settings, this will show different year options. When the producer’s enrollment is changed, they will start their MRV enrollment from that year and depending on the project’s available years, any additional open enrollment year(s).