Possible to undo a site deleted by mistake?

I deleted a site by mistake. Is it possible to “undo” this action ?

Hi, yes:
Create a new website

then in the database table piwik_site change the ID of the new website to the one you deleted

it should restore your reports

Thx for your quick answer !

Unfortunatly it didn’t work : (

A reason for this might be that in between I updated piwik from 2.14.3 to 2.15 .