Updating all monsters hp for existing module

This has probably been asked before, but my search-fu is probably weak and I'm not asking the right words. I have module (Rime of the Frostmaiden) I'm running for some folks, but it's a 1-11 and the party is starting at 7 after hopping out of a different adventure.  No problem, I can easily level up my monsters in a pretty fair manner.  Most the stuff is easy, but here's the trick.  When it's time for HP, is there a way to push the updated hp to the tokens already deployed in the maps?  I know I can update the tokens manually, or redrag the tokens back out. I'll admit, I haven't fussed with it too much, that's this and next weekends project.  But if there's a way I need to do it from the start, I wanted to know ahead of time.  Thanks for any guidance, ya'll.

Because of the way HP is assigned to tokens, I don't think this is possible without an API script. HP values are recorded on tokens, but not linked to the character sheet. This is so that subtracting 5 hp from one goblin doesn't subtract 5 hp from all goblins simultaneously. You can update the default token, but not the ones already deployed. If you are going to address this manually, I would suggest making a backup copy of the campaign when you are finished with all modifications, in case you ever want to run it again.

That's what I figured was the case and was afraid of.  I was hoping a change to the entry would overwrite the tokens, or there was some sort of update all type thing, but oh well.

There is such functionality for some things, but not for this, unfortunately, short answer: because the values are manually set and not a link.