Thank you Mirtheil
With your Help I have it solved it.
Here is the Updated code
SELECT Process_LOG.Process, Process_LOG.OE, IF(shp.Shiped is null,NUll,If(Substring(shp.Shiped, 29, 10) = '20__/__/__', null, convert(replace(Substring(shp.Shiped, 29, 10),'/','-'),SQL_DATE))) as ShipDate FROM...