Splash LP

I know you can splash to 100 LP and then have to play that role and win before the series actually begins. Restricting the ability to Splash into higher ranks. But, am I correct that you can lose on a different role and splash your good rank to lower ranks? If I am correct would that not be unfair that you can't splash to higher ranks but you can lose ranks with Splash? If, this is correct can you even the playing fields Devs and either allow splashing up and down or not allowing splash into or out of ranks....