How to change the SID of webforms to increment from a new starting number We launched a new website that uses webforms but need to make sure our webforms are using an SID for results larger than the last number used on the old site. 

Please note that I am not referring to the serial for the webform submission but Drupal's SID.

For example, on the new site, the first submission ID was 1. I need it to be 10000.
If it's a Drupal 7 site: 


Edit the webform.   
Go to the "Form settings" subtab of the Webform
tab.
Scroll down and expand the Advanced Settings section. 
There's an exposed field for the Next submission number.






If it's a Drupal 8 site:


Edit the webform.   
Go to the "settings" subtab of the Webform
Scroll down and expand the Submission Settings section. 
There's an exposed field for the Next submission number.