To change the ED of a replay that has already been saved you need to open the replay from your replay folder with notepad.
Once in your notepad file you need to change the ED to what you want it to be there.
(Note: if you've made contact or dismembered anything from uke or yourself it will be very glitchy)
Ok, so once in notepad you can then press ctrl+f and find all lines where it says "pos 0".
It will highlight anywhere it says that, you then need to delete the whole line of following numbers.
Pos 0: 0803;0287412 080284;2197421;924419
So yeah, the whole line, and that needs to happen for everywhere it says that in the code and save it.
That SHOULD work, if not, send me the replay from before you tried this and i'll have a tinker with it.