Found a bit of an issue when going from previous 2.74 to this new 2.75.
Characters will still show number of skills equipped they had equipped previously (5/5), but those skills aren't available/won't show up in the skill list if the skills are locked behind skill tree. You also can't un-equip a skill that is hidden like this (unless you are able to go down the skill tree points to "unlock" said skill. )