It is highly recommended that those owners / users of previous Impacto versions uninstall their existing template prior to installing this new version.
This template is not an 'update' to the previous versions, but rather, it is a completely new build / template.
Any customizations to CSS will have to be redone, as this template makes use of new (responsive) classes and in most cases the classes that may have been customized previously will not coincide with any of the new classes.
Please be sure to keep a copy of your previously customized template, so that you may reference the changes to apply to the new version if needed.
Additionally, there are some new and different module position names introduced with this template that should be noted.
**It is not necessary to update to this version of Impacto** unless you want to get the new features provided with the update to the Wright v3, which you may read more about HERE
The original version of Impacto, built on Wright v2, will continue to be supported and WILL work with Joomla 3.0 when it is released.
Questions on how to do this process may be asked in the Help Center.