No, it’s ok, just don’t do that in the future in Miami dade. crossing=marked is the old tag and still exists in parts of Miami dade from previous contributions but I have been trying to replace them with crossing=uncontrolled when I see them, you don’t have to unless you want to. When your adding new crossings (ways or vertex’s) what ever tags Rapid adds by default is ok, I’m just asking about the ones that were already added (already existed). If you think the type is wrong of an existent crossing then obviously change it and again you don’t have to remove those tags from the new features you add. This is an issue with Rapid its self and would have to be fixed there so I am planning to put up an issue on there soon to figure it out there. Assuming Rapid works the same as iD in this situation when you select “marked crossing” it should add crossing=uncontrolled as the tag.  

Happy mapping,
Udar.