Below are several things that aren't synched between Marketo programs and SFDC campaigns, but should be.
When you uncheck Success on one of a Marketo channel's progression statuses, the corresponding campaign member status in the SFDC campaign does not have it's Responded checkbox unchecked.
When you use the Change Program Data flow action to change whether a progression status was a Success or not, the change is not reflected in the SFDC campaign member response.
When you change the name of the campaign or program, the change is not reflected in the other system.