It's complicated.
a. The Keep is more than a little sporadic about the recording what your characters have done in all of your playthroughs..
b. If the Keep doesn't "know" about some actions, then it's entirely possible that choices which should be visible are marked as "hidden".
c. You can view all the choices in the Keep by changing your settings, but that may result in SPOILERS! (You might see options and consequences that you hadn't even realized were possible.) Settings are found under the "globe" icon in the top-right, then under the "gear" icon.
d. If you enable Spoilers, you'll be able to set the results for all choices in the games, (although you still won't be able to select mutually exclusive ones.) At least you can limit the Spoilers to just specific games, (e.g. only DAO and/or DA2.)
