Moss into rooted dirt?

When azalea grown on a moss block it convert moss into rooted dirt which is kinda useless and irritating because who wants to replace beautiful and useful moss into rooted dirt(same case in clay block).I want that azalea only can replace dirt types(dirt,coarse dirt,grass block, mycelium) into rooted dirt.So that our unique moss can't get replace by just rooted dirt. I like rooted dirt,a very good terraforming block,but I like moss more(since it is more useful).