Mostly but not everything. Be more specific about what kind of thing you're talking about because I doubt anyone is going to want to catalog every difference.
Using a level boost just sets your character to level 110. There's nothing stopping you from going back and doing whatever low level quests you want.
The only thing that's locked is the heritage armor, which requires you to level up from scratch. No boosting, no RAF. You can still use EXP pots, however.