The adoption of the Charter shall not affect any pre-existing rights of the Municipality, nor any right or liability, pending suit or prosecution, either on behalf of or against the Municipality or any officer thereof, nor any franchise granted by the Municipality, nor pending proceedings for the authorization of public improvements or the levy of assessments therefor, if any. Except with respect to those ordinances or resolutions expressly repealed by this Charter or in conflict therewith, all ordinances, resolutions and acts of Council shall continue in effect until lawfully amended or repealed.