Using Webform Tokens
Webform tokens allow you to access and output data from a webform submission. If you've used webform tokens on your previous Web Express site, by including them in the email template, or forwarding them to another service, you'll need to update those tokens because the syntax has changed.
Previously, the syntax for using a webform token looked like this:
[submission:values:email_address]
(In this example, the token is outputting the submitted value of the field with the key "email_address")
In order to keep using webform tokens, you'll need to update them to the new syntax which looks like this:
[webform_submission:values:email_address]
The only difference here is the change from "submission" to "webform_submission" - the rest of the token text should remain the same.