If I have ten surveys and ten corresponding token tables, what is the best way to change the value of the token field in the lime_tokens tables after adding a new participant to these surveys in the Central Participants panel?

One solution is to export the tokens from survey 1 as CSV file and then import them at surveys 2 to 10 using CSV import. Duplicates can be filtered so this should only add new tokens to your surveys.

The concept of using the token created in the first survey and replicating the value to the remaining token tables is great. Thank you for the quick response (and suggestion).