Volos Guide not loading character sheets for NPCs

So I decided to drag and drop some of the Warlock Npc character sheets and the Master thief Npc into my game of TOA however when I did, I noticed that they dont come with prefilled out sheets and that you have to manually do them? I feel that it is then pointless in buying the books if I have to do the work anyway? Am I being stupid or are the sheets not meant to be filled out. Some of the creatures have their sheets filled out, just seems a little odd that these ones didn't  Master Thief, Warlock pact of the old one, Warlock pact of the Arch fey etc.

What parts are not filled out? If it is the spell list, this is expected and advertised behavior. From the wiki: Spellcasters :  There was an intentional decision made with spellcaster monsters where we limited the individual spell entries down to the most commonly used offensive spells. For those we created a separate actions for each to be rolled from the sheet. We went with this method instead of having an NPC sheet with every single spell inputted under Spellcasting to keep the attribute bloat low to keep your games optimized. That being said, any spellcasting NPC should have all their spells listed under their  Spellcasting  Trait on the NPC sheet when you do a drag and drop from the Compendium. If it was something else not filled out, that's probably a problem.

The whole character sheet isn't filled out, when I drag the volo guide monster token onto the map it has the token and all the information on the bio page but none of the sheet is filled out

Try dragging the compendium entry onto the NPC's character sheet a second time.

Ill try doing that to see if it works