Dynamic Lighting Issue

I am a new DM on Roll 20 so maybe I just did something wrong but I cannot find anything similar on Reddit or the Roll20 community.  I am running a D&D Tomb Of Annihilation module and I created all the player characters.  I have the VTT extension as well. I did not  set up all their legacy lighting information (i.e. darkvision) on the Token Editor before converting to the new dynamic lighting.   Only one player.   When I drag from their name to drop their token on the map, when I hit the "settings" icon, and go to dynamic lighting, only that one player has any night vision.   I have since then updated all Token Editor settings, but every time  I drag the characters onto a new map, I have to redo all their night vision setup.   Please help, as this is becoming tedious!

People think once you link a token to a character sheet, you never have to save the token again, even after changing it.  Not true. Roll20 doesn't autosave your settings for you.  That would take too many resources and is also preposterous. Once you finish changing token settings, you have to then open the character sheet, delete the old token, and save the token with the new settings to the character sheet again so that the character sheet holds the new token settings changes.  Otherwise you will just drag and drop the token with the old settings back onto the tabletop and say "It's not working!".  If it's not working, relax.  You're just doing it wrong. Here's a youtube video about it.

Long and short of it is that the linking of token attributes to character sheets means an assumption that all token changes are propagated back to the character entry (token attributes are saved to the default token) - but as detailed by Gargamond, this doesn't take place. It would be nice if it did - the linking of sheet to token is cumbersome and counter-intuitive, so it stands to reason a lot of people miss this other aspect of linking sheet to token.  I have to wonder if there is a pro API that does this or that could do this if a GM wanted this - on change of token attributes, re-set the represented token on the character sheet with the current token.  Edit: or provide the GM with a button asking if they want to do this. 

Since the Character has a stored reference to its default token, and each token has a reference to the character it represents, it would actually be trivial for them to add an endpoint that would allow updating the default token.  Then they could add a button to the token editor "Update Default Token" that would make a post to the endpoint with the current token's settings and the represented character's id and update the default token in the backend. I think it's just a matter of someone making the request on the correct board for the devs to be assigned the task. Doing this through a custom script could also be accomplished, but would either always be on or would require adding a custom attribute to each character; and then always be on for that character.

Thank you for your replies! It really did help my issue!  I appreciate it!