So for example if I write something like this: "Yo sabo el verdad." and then later change it to "Yo sé la verdad.", should I say "Lo he cambiado."? or "La he cambiado."?
I think that because it's the incorrect phrase or sentence that I'm correcting/changing (both of which are feminine words in Spanish [la frase, la sentencia]), "La he cambiado." would be right. Is that correct?